How did cyanobacteria affect Earth's early atmosphere?
A.
They replaced oxygen with carbon dioxide in the atmosphere.
B.
They eliminated the harmful ultraviolet rays of the Sun.
C.
They replaced carbon dioxide with oxygen in the atmosphere.
D.
They absorbed ozone molecules from the atmosphere.

Answers

Answer 1

Answer:

The correct answer is option - C. They replaced carbon dioxide with oxygen in the atmosphere.

Explanation:

Cyanobacteria or Blue-green algae is a group of bacteria that is making its own food using water and carbon dioxide in the presence of sunlight, the process of photosynthesis

These organisms release oxygen as a byproduct of photosynthesis in the atmosphere. Through this process, these organisms replaced carbon dioxide with oxygen in the atmosphere in the early earth.

Thus, the correct answer is option C. They replaced carbon dioxide with oxygen in the atmosphere.


Related Questions


16. What type of organism utilizes photosynthesis to produce food?

A. Heterotrophs
B. Autotrophs
C. Sharks
D. Frogs

Answers

Answer:

B

Explanation

Autotrophs make their own food so photosythesis is autotrophic

Autotrophs!

Autotrophs are plants and they make their own food through photosynthesis

Hope this helped!

Which product of photosynthesis contains the chemical energy that was made from the radiant energy

Answers

Answer:

Eukaryota cells contains chloroplast that uses the radiant energy of sunlight to convert CO2 and H2O into carbohydrates.

Explanation:

The students are performing an experience that involves chemicals.

Based on the picture, what safety practice did both students fail to carry out?

A.) properly disposing

B.) keeping the work environment clean

C.) using proper laboratory equipment

D.) wearing appropriate laboratory attire

Answers

Answer:

your answer will be D. wearing approiate labotary attire

Explanation:

The student clearly has no gloves on may hurt themselves doing the lab teacher should've had told the kids the rules and what to expect and what to do

Answer:

The correct answer will be option-D.

Explanation:

A scientific experiment involving chemicals must be performed with precautions as chemicals can cause serious health problems like carcinogens causing cancer.

The laboratory attire of a lab includes a face mask to cover mouth, a pair of goggle to protect eyes, hand gloves to protect hand and a laboratory coat to protect body and clothes.

Since in the given question, the hand gloves and laboratory coat are missing, therefore, option-D will be considered the most valid answer.

During a trip to the Galapagos Islands, which observation led Charles Darwin to suspect that organisms change over time?

Answers

Answer:

Beaks of birds for example are specific to what food is around them.

Explanation:

Answer:

prolly "Island finches resembled mainland finches, but were not the same species."

Explanation:

it's not "Island finches did not have beaks of the same size and shape."

Which component of blood transports oxygen?

Answers

Answer:

Red blood cells.

Explanation:

Answer:

Hemoglobin

Explanation:

Hemoglobin which is found in red blood cells help transport oxygen to the lungs and other body parts.

Of the six kingdoms, which are prokaryotic and which are eukaryotic?

Answers

Organisms are classified into three Domains and into one of six Kingdoms of life. These Kingdoms are Archaebacteria, Eubacteria, Protista, Fungi, Plantae, and Animalia.

which statements best describes the damage that results from earthquakes ? check all that apply
• amount of damage can be used to determine intensity
• damage can be measured using the Richter scale
• earthquakes that cause maximum damage are not common
• Roman numerals are used touring damage created by an earth quake

Answers

Answer:   damage can be measured using the Richter scale

The amount of damage can be used to determine intensity would be the answer to your question

Julie’s town uses single-stream recycling, so Julie puts all of her household recyclables in a single container to be picked up. The recycling plant must sort out the different materials, including paper, cardboard, different types of plastic, glass bottles and jars, aluminum drink cans, and steel food cans.

How would an electromagnet be used in this type of recycling plant?

to remove plastic bottles from glass bottles
to divide food cans from soft-drink cans
to separate paper from cardboard
to gather colored glass from colorless glass

Answers

Answer:

to divide food cans from soft-drink cans      

Explanation:

An electromagnet is based on the principle that current through a coil produces magnetic field. Magnetic objects such as Iron, nickel, cobalt or objects made from their combination are attracted by the magnet. This property is used to separate materials in recycling plant.

Steel (alloy of iron)  would be attracted by the magnet where as aluminium would not be. Thus, steel food cans can be separated from the aluminium soft-drink cans using an electromagnet.

Answer:

B

Explanation:

bc

What is the best explanation as to why the Thwaites Glacier is melting so rapidly?

Answers

Answer:

Carbon dioxide has been released by the burning of fossil fuels. This process is increasing the ocean's water temperature resulting in the glacier melting

Explanation:

The carbon dioxide emissions have constantly been on the rise ever since the Industrial Revolution occurred. The burning of the fossil fuels is the main reason why there is such high quantity of this gas released into the atmosphere. The carbon dioxide is a greenhouse gas, thus it contributes to the arming up of the atmosphere. Because the atmosphere is warming up, the water is warming up as well. The higher temperature of the water results in melting of the glaciers, such as Thwaites Glacier. As the process continues, more and more of the glacier will be melted, with the end result being relatively big rise of the sea level.

The summer solstices occurs around June 21st and is the longest day of the year in the northern hemisphere. On this day, the Sun is as far ______ as it will get at sunrise and sunset. A) east B) north C) south D) west

Answers

Answer:

B) north

Explanation:

On June 21st we have the summer solstice in the Northern Hemisphere. This is the longest day of the year in the Northern Hemisphere and officially it marks the beginning of the summer. On this date, the sun gets the furthest north during sunset and sunrise on the Northern Hemisphere. This is the case because that is when the Northern Hemisphere is the most tilted and exposed to the sunlight. Basically, the further north the Sun appears on the sky in the Northern Hemisphere, the more sunlight there will be and the higher the temperatures will be as well.

Hydrilla (Hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in Florida. Hydrilla has already been introduced to hundreds of bodies of water throughout Florida. Hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions.


Part A: Describe how hydrilla affects native plant and animal species. Include both a biotic and an abiotic limiting factor.

Part B: Suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla.

Answers

Part A: Invasive species displace native species in their habitat hence reducing biodiversity that is necessary for a balanced ecosystem. This is because invasive species do not have a natural predator in their new environment and hence their growth is unchecked. They, therefore, take up much of the nutrients and other biotic factors utilized  by the other species.

Part B; To deal with invasive species, one can introduce a predator of the invasive species into the environment. Another is the influencing a limiting factor (usually an abiotic factor) that affects the invasive species specifically.  These will check the unregulated growth of invasive species and preserve the ecosystem’s biodiversity.

which organisms in this food web are producers? please select the two correct answers
A - Green Algae
B - Roseate spoonbills
C - Mangroves
D - Mangrove water snakes
E - American Crocodiles​

Answers

Answer:Green algae and mangroves.

Explanation: Both on those organisms have chlorophyll and chloroplasts, and they are considered as plants.

Answer:

Option A and option C are the correct option,

Explanation:

A. Green algae are autotrophs like plants and produce their own food by photosynthesis. They also have chloroplasts for photosynthesis. In this food web they are bottom of the the web that suggests too that green algae is the producer.

C. Mangroves are the group of plants found in the intertidal coastal area. Mangroves also make their own food by the process of photosynthesis.

HELPPP 35 points will mark branliest

Answers

Answer:

3. is a haploid

Explanation:

this is when the 4 daughter cells (meiosis) contain half the number of chromosomes of the parent cells (which they are diploid)

Answer:

3. meiosis

9 and 10. Depends if parents are short or tall

If one is short and one is tall then chances will be 50%

Happy to help

Pls mark as Brainliest.

Did the T. Rex have an amniotic egg?

A. Probably not because their is no history Of closely related animals having an amniotic egg.

B. It is quite likely because lots of animals in the past have had amniotic eggs, so the T. Rex probably did too.

C. It is quite likely because both the caiman and parrot have had amniotic eggs and they share recent common ancestor with the T. Rex.

D. Probably not because the T. Rex is no longer living.


I’m failing biology, help a girl out!

Answers

I know that It has an amniotic egg so It is either B or C

Final answer:

The T. Rex most likely had an amniotic egg, as it is a characteristic of amniotes. Close relatives of the T. Rex, like the caiman and parrot, have had amniotic eggs, indicating that the T. Rex probably had them too.

Explanation:

The T. Rex most likely had an amniotic egg. Amniotic eggs are a characteristic of amniotes, which include reptiles, birds, and mammals. The evolution of amniotic eggs allowed for the development of embryos within an aquatic environment inside the egg, which reduced the dependence on a water environment for development. Although the T. Rex is no longer living, its close relatives, such as the caiman and parrot, have had amniotic eggs, indicating that the T. Rex probably had them as well.

James wants to create a self-sustaining ecosystem, or vivarium. Which method would most likely result in an ecosystem that
is viable for the longest amount of time with no additional care?
A:Put a few plants, water, sand, and a heat lamp inside a clear glass aquarium and seal the top. Place it in a sunny location.
B:Put water, fertilizer, soil, plants and insects in an open, clear glass aquarium. Place it in an area that has some sunlight
and some shade
C: Put rocks, water, and many plants in an open, dark-colored plastic tub. Place it in an area with direct sunlight.
D:Put soil, water, many plants, and a few insects in a sealed, clear plastic aquarium. Place it in an area with indirect sunlight

Answers

Answer:

D

Explanation:

How much faster is the Arctic warming compared to the rest of the world?

Answers

Answer:

Twice

Explanation:

According to the latest studies about the global warming and how it affects part of the world, the research has shown that the Arctic is warming up twice as fast as the rest of the world. This should not really come as a surprise as the Arctic is not consisted of land mass, but instead of ocean water. The ocean water needs slightly lower temperature to freeze, so it is easier for it unfreeze. Once it unfreezes it moves and it becomes part of the global water circulation patterns. This results in bring in more warmth to the Arctic through the ocean currents, which also results in more melting of the ice, so the rate of warming up is constantly increasing.

describe 2 observation of water that provide evidence that water molecules are attracted to one another

Answers

Final answer:

The capillary action and water's solubility property demonstrate the attraction between water molecules. The former is seen when water ascends a straw or capillary tube because of water's adhesive properties. The latter is shown when substances like table salt dissolve in water due to the strong attraction between polar water molecules and the ions in salt.

Explanation:

There are two clear observations that provide evidence that water molecules are attracted to one another. These observations refer to the water's property of adhesion and cohesion.

Firstly, the phenomenon called capillary action demonstrates how water molecules are attracted to each other. This effect is observed when water climbs up a straw or capillary tube, which occurs because water molecules are more attracted to the charged surfaces of the tube than to each other, inducing the water to adhere to the tube's surface and move upward.

Secondly, water's solubility property provides another evidence of the attraction between water molecules. For instance, when you dissolve table salt in water, the polar water molecule's attraction to the ions (Na+ and Cl-) in salt overcomes the ionic bond in the salt, resulting in its dissolution. Conversely, non-polar substances like oils do not mix with water, because the attraction among water molecules is stronger than the attraction between water and oil molecules.

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Using the model provided, which statement would not be correct regarding ATP

Answers

Answer:D

Explanation:

When a phosphate group is removed from ATP by hydrolysis, ADP is produced and energy is stored for cellular processes the statement is not correct regarding ATP, hence option D is correct.

When the high-energy phosphoanhydride bonds in adenosine triphosphate (ATP) are broken, such as in muscles, chemical energy that had been stored in these bonds is released through the catabolic reaction process known as ATP hydrolysis.

When a phosphate group is removed from ATP, ADP is produced and energy is provided for cellular processes, hence option D is correct.

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Which of the following must be true in a dry limestone cave? Select all that apply. A. Water once entered the cave. B. The cave was formed by volcanic means. C. Any cave formations are no longer growing. D. There must only be stalagmites, no stalactites.

Answers

Option b is correct..

Caves are formed by the dissolution of limestone. Rainwater picks up carbon dioxide from the air and as it percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone along the joints, bedding planes and fractures, some of which become enlarged enough to form caves.

Which MOST LIKELY represents the gas being released and the process used to make it?

Answers

I believe that the gas is Carbon dioxide and that it is being released by respiration.

The gas being released is carbon dioxide and in the process called cellular respiration.

In apparatus set up by the students, the yeast used the sugar in the apple juice together with the oxygen to generate adenosine triphosphate (ATP) and releases carbon dioxide as a waste.

Further Explanation

Yeast is a one-celled organism that requires energy to survive. Yeast can do anaerobic and aerobic respiration. For yeast to survive, it has to make its energy.

To survive, yeast uses cellular respiration, where glucose is transformed into ATP and carbon dioxide.

In other words, cellular respiration is a metabolic process that involves the breaking down of glucose to generate adenosine triphosphate (ATP) and releases waste products. The waste product is carbon dioxide (C02)

Cellular respiration is used by both plants and animals to break down sugar and convert it into energy. The energy produced is used by plants and animals to carry out some task at the cellular level. The essence of cellular respiration is to provide the energy required for cells to function.

Therefore, in the apparatus set up by the students, the yeast used the sugar in the apple juice together with the oxygen to produce adenosine triphosphate (ATP) and discharges carbon dioxide as a by-product.

LEARN MORE:

Which MOST LIKELY represents the gas being released and the process used to make it? https://brainly.com/question/10273602 Two students set up the following apparatus in a lab: a pipette was filled with a mixture of yeast and apple juice and inverted in a test tube filled with warm water https://brainly.com/question/6750753

KEYWORDS:

carbon dioxidecellular respirationgaspipetteATPby-products

pro life what is it​

Answers

Answer:

opposing abortion and euthanasia.

Explanation:

supporting the belief that it is immoral for a pregnant woman to have the freedom to choose to have an abortion (= an operation to end a pregnancy) if she does not want to have a baby

Which phrase describes the phenomenon that implies that small atmospheric changes affect the weather weeks or months later?

the butterfly effect
short-range forecast
long-range forecast
automated weather

Answers

Answer: The answer is a) the butterfly effect

Explanation:

Answer:

Option A: The butterfly effect

Explanation:

The butterfly effect shows that a small change results in large effect. The change initially is small but the resulting effect is of large variation.  

The phenomenon that implies that small atmospheric changes affect the weather weeks or months later. This is a result of butterfly effect that a small change in atmosphere affects whether.

Identify the statement about meiosis that is incorrect

Select one:
a. Pairing of homologous chromosomes
b. Four haploid cells are formed
c. At the end of meiosis the number of chromosomes are reduced to half
d. Two cycle of DNA replication occurs

Answers

Answer:

the answer is d)

Explanation:

i think the reason why it is d) is because during meiosis the there shouldn't be any dna that are carbon copies because all living things that are made sexually has different dna ( except identical twins of course)

The incorrect statement about meiosis is 'd. Two cycles of DNA replication occurs.' In reality, DNA replication occurs once before Meiosis I, after which two rounds of cell divisions create four haploid cells.

The statement about meiosis that is incorrect is: d. Two cycles of DNA replication occurs. In meiosis, DNA replication occurs only once, during the S phase of the cell cycle prior to the first meiotic division. Following this, there are two rounds of cell divisions known as Meiosis I and Meiosis II, which result in four haploid cells from one diploid parent cell. During Meiosis I, homologous chromosomes pair up and may exchange genetic material through crossing over. Afterwards, these homologous chromosomes are separated into two cells. Meiosis II resembles mitosis where the sister chromatids within the two daughter cells are separated, resulting in a total of four haploid cells. These events ensure that at the end of meiosis, the number of chromosomes is reduced to half in each of the four haploid cells produced.

What does experimental mean

Answers

Answer: Based on untested ideas or techniques and not yet established or finalized

The observed redshifts of galaxies are evidence for the Big Bang theory of the origin of the universe, because they indicate that
A) the galaxies are still very hot.
B) the galaxies cannot be seen from the other side.
C) the galaxies are moving rapidly away in all directions.
D) the galaxies turned red at the original moment of explosion.

Answers

Answer:

C

Explanation:

things are moving in space, proving that since the big bang, planets and galaxies have formed and are expanding and others are forming. A red light trace shows when something is moving away, versus a blue light trace when it is coming closer. Things are ever moving in the universe.

3. How often does the sun's magnetic field reverse?
A. Every 11 years
B. Every two million years
C. Every 100,000 years
D. Every 350 days​

Answers

Answer:

A. Every 11 years

Explanation:

It happens at the peak of each solar cycle as the sun's inner magnetic dynamo re-organizes itself. The coming reversal will mark the midpoint of Solar Cycle 24.

The sun's magnetic field reverses A. Every 11 years.

The Sun's magnetic field undergoes a complete reversal of its polarity approximately every 11 years. This phenomenon is known as the solar magnetic cycle or the solar cycle. The cycle starts with the Sun's magnetic field being oriented in a particular direction, and over the course of about 11 years, it gradually flips its polarity, with the north and south magnetic poles interchanging.

The solar magnetic cycle is driven by the complex processes occurring within the Sun's interior. It involves the generation and interaction of magnetic fields through processes such as differential rotation, convection, and the dynamo effect. These processes generate and amplify the magnetic fields, leading to the periodic reversal of the Sun's magnetic polarity.

Therefore, the correct answer is A. Every 11 years.

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What process in human body cells transfers the energy stored in a grilled cheese sandwich to ATP?

Answers

Answer:

Cellular Respiration

Explanation:

Final answer:

The energy from a grilled cheese sandwich is transferred to ATP through the process of cellular respiration, specifically oxidative phosphorylation.

Explanation:

Every cell in the human body uses adenosine triphosphate (ATP) to store and release energy. The energy from a grilled cheese sandwich is transferred to ATP through the process of cellular respiration, specifically oxidative phosphorylation. In this process, the energy stored in the chemical bonds of glucose from the sandwich is released and used to generate ATP molecules.

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The image shows a type of stress.

Which type of fault occurs when rock is subjected to this type of stress?

hanging

normal

reverse

strike-slip

Answers

Answer:

Option C, Reverse

Explanation:

A reverse fault is one in which compression force squeezes the rock crust into small space due to which the hanging wall will push up to a higher level as compared to a footwall. Here in this image none of the block is pulled away or forced towards the other. However, the rock has broken due to the application of compressive force which will now tend to create a reverse fault

Hence, option C is correct

Answer:

The correct answer is "normal"

Explanation:

Edge 2020

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Which of the following is an example of evidence supporting the theory that volcanic eruptions caused the dinosaurs to become extinct?
A. Massive lava flows in India date to the same time period.
B. A thin layer of rock containing iridium formed at that same time period.
C. Many sea creatures became extinct at the same time as the dinosaurs.
D. Volcanoes often form along boundaries between the sections of Earth's crust called plates.

Answers

d. volcanoes often form along boundaries between sections of the earths crust called plates

Why is it important to classify the millions of species on earth?

Answers

to organize them and speak about them accurately is correct.

incorrect  answers

to have common names that everyone can remember

to more easily sequence their genetic material

to create scientific names that only scientists can learn

Answer:

its d

Explanation:

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Surely it was enough to spend the night upon the cliff. The Forest People themselves do not come near. Yet, all through the night, I knew that I should have to cross the river and walk in the places of the gods, although the gods ate me up. My magic did not help me at all and yet there was a fire in my bowels, a fire in my mind. When the sun rose, I thought, "My journey has been clean. Now I will go home from my journey." But, even as I thought so, I knew I could not. If I went to the Place of the Gods, I would surely die, but, if I did not go, I could never be at peace with my spirit again. It is better to lose one's life than one's spirit, if one is a priest and the son of a priest. Which conflicts occur in this passage? Select three options. Character vs. nature: The narrator must conquer the challenges of the landscape to visit the Place of the Gods. Character vs. character: The narrator must face the Forest People, since they live directly on the route to the Place of the Gods. Character vs. self: The narrator must convince himself that just seeing the Place of the Gods from a distance is not enough. Character vs. society: The narrator must go to the Place of the Gods to satisfy his spirit because he is a priests son and must follow his fathers teachings. Character vs. self: The narrator is overwhelmed with fear of what he sees coming from the Place of the Gods and momentarily retreats. What is the value of t?7 2 11 = t 11a.154b.22 c.15d.14 what is the backbone of the dna structure composed of? What can the reader conclude about Scrooge from this excerpt from Charles Dickens's A Christmas Carol?Now, being prepared for almost anything, he was not by any means prepared for nothing; and, consequently, when the Bell struck One, and no shape appeared, he was taken with a violent fit of trembling. Five minutes, ten minutes, a quarter of an hour went by, yet nothing came. All this time, he lay upon his bed, the very core and centre of a blaze of ruddy light, which streamed upon it when the clock proclaimed the hour; and which, being only light, was more alarming than a dozen ghosts, as he was powerless to make out what it meant, or would be at; and was sometimes apprehensive that he might be at that very moment an interesting case of spontaneous combustion, without having the consolation of knowing it. At last, however, he began to thinkas you or I would have thought at first; for it is always the person not in the predicament who knows what ought to have been done in it, and would unquestionably have done it tooat last, I say, he began to think that the source and secret of this ghostly light might be in the adjoining room, from whence, on further tracing it, it seemed to shine. This idea taking full possession of his mind, he got up softly and shuffled in his slippers to the door.A. Scrooge is excited about what will happen next, so he feels angry when the ghost appears to be late. B. Scrooge is disturbed by the ghost's presence, so hes unable to sleep for more than a couple of minutes. C. Scrooge is very particular about time, so he starts getting restless when the ghost doesnt arrive at its appointed time. D. Scrooge is alert even in his old age, so hes prepared for anything the ghost will throw at him. E. Scrooge is fearful but curious about the ghost, so he puts his slippers on and goes to the room where the light is shining. The molecular weight of carbon dioxide (CO2) is 44.00 a.m.u., and the molecular weight of propane gas (C3H8) is 44.10 a.m.u. Thus CO2 diffuses_______ C3H8.Slower ThanFaster ThanThe Same As Which Transformation is a isometry? The equation of a graph is 4x - 3y = 5. What is the x-intercept?