Answer: Biochemical evidence such as fossil records, geological evidence, comparative anatomy, similar selective pressures, and molecular evidence all prove evolution and indicate the conditions in which early life resided on earth.
Explanation:
Fossil records- transitional forms of modern and ancient creatures imply the time periods of evolution and the environmental factors which forced those changes.
Geological evidence- (e.g. continental drift) can reveal the geographic conditions of ancient environments and the resulting interactions of different life forms.
Comparative anatomy- connects closely related species through similar physical structures.
Selective pressures- different organisms exhibited similar behavioral changes, indicating common ancient geological pressures.
Molecular evidence- organisms with related DNA prove ancient connections between species.
Biochemical evidence like fossils, anatomical comparisons between organisms, molecular tests, continental drift, similarity traits explain the evolution and early circumstances in which life started on the Earth.
The following are the evidences which helps scientists to learn about early life on Earth:
Fossil records are evidence that shows the difference between early life and present-day life on Earth.Continental drift tells about the geological condition and the distribution of life on the different regions of the Earth.Anatomical comparison among closely related organisms through studying physical attributes gives evidence about ancestors.The molecular test gives a relation between closely related species with the help of DNA examinations.
Therefore, biochemical evidence help researchers in learning about the early life on the Earth.
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Place the organisms in the correct locations in this food web.
Answer:
Explanation:
green plant beside mouse.......eagle by snake.......goat behind jackal............lion in front of jackal
Answer:
Look at the picture for the answer
Explanation:
Which organelle provides protections and support to a cell? Cell wall, Cytoplasm, Nucleus, Ribosome
Answer:
The answer is a cell wall.
Explanation:
Cytoplasm is the organelle that keeps the other organelles together. The nucleus is the cell that conducts and instructs the cells activities. The ribosome contains RNA. Cell wall is the most reasonable.
Answer: A cell wall :)
Explanation:
I did the quiz with a 100%
Which element is found in nucleic acids but not in proteins?es each amino acid unique?
Answer:
Phosphorus
Explanation:
Nucleic acids are among the four major biomolecules, others being proteins, carbohydrates and lipids.Nucleic acids include DNA and RNA and are made up of nucleotide bases. Nucleotide bases are made up of a sugar, phophate group and a base. Nucleic acids differ from the other three biomolecules in that they contain element phosphorus while carbohydrates, proteins and lipids does not.Which statement describes the role of phloem within a plant?
Answer:
transport food upward and down
Explanation:
Answer:
C) It transports food to all the parts of the plant only in the downward direction.
Explanation:
Phloem is a conductive tissue specialized in transporting the so-called elaborated sap. Phloem circulates water, carbohydrates, amino acids, lipids, hormones, vitamins, among other substances. This tissue occurs in all organs of the plant. The elaborated sap is the result of the photosynthesis process that is carried out on the leaves, for this reason, the phloem transports food in a downward direction. The tissue that carries food upward is the xylem.
Phloem is a complex tissue, that is, it is formed by several cell types. They are: sieved elements, companion cells, parenchymal cells, fibers and sclereids.
What is the relationship between temperature and the dissolution of ocean water salts?
Answer: Direct proportion. The salinity of water in the ocean rises with higher temperature because water is evaporated from the ocean, leaving more solutes (salts) in it.
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A positive relationship is shared between the temperature and saltiness of the oceans waters. As density increases, the saltiness in oceans waters does too.
Saltiness descreases when polar caps melt or increases from the freezing of polar caps. Evaporation can increase saltiness and density too and in turn freshwater decreases saltiness and density.
(Sorry this is all I could find about relationships between the oceans waters and the dissolution in oceans water salts. (
I found the answers on marinebio.org and I am claiming here that these answers are not my own but information I found from this site and I hand all credibility to the author whom published this page on this site)
Explain why washing hands can prevent the spread of disease
Not washing hands harms children around the world
About 1.8 million children under the age of 5 die each year from diarrheal diseases and pneumonia, the top two killers of young children around the
world.
Handwashing with soap could protect about 1 out of every 3 young children who get sick with diarrhea and almost 1 out of 5 young children with respiratory infections like pneumonia.
Although people around the world clean their hands with water, very few use soap to wash their hands. Washing hands with soap removes germs much more effectively.
Handwashing education and access to soap in schools can help improve attendance.
Good handwashing early in life may help improve child development in some settings.
Estimated global rates of handwashing after using the toilet are only 19%.
Not washing hands harms children around the world
About 1.8 million children under the age of 5 die each year from diarrheal diseases and pneumonia, the top two killers of young children around the
world.
Handwashing with soap could protect about 1 out of every 3 young children who get sick with diarrhea and almost 1 out of 5 young children with respiratory infections like pneumonia.
Although people around the world clean their hands with water, very few use soap to wash their hands. Washing hands with soap removes germs much more effectively.
Handwashing education and access to soap in schools can help improve attendance.
Good handwashing early in life may help improve child development in some settings.
Estimated global rates of handwashing after using the toilet are only 19%.
Which of these events occurred during the Precambrian time?
Cyanobacteria filled the water and air with oxygen.
Early humans began to make tools, harvest plants, and make cave paintings.
Pangaea, the super continent, was formed.
Pangaea began to break apart into many continents separated by shallow seas.
Cyanobacteria. The Cambrian explosion wouldn’t have happened without so much oxygen that the Cyanobacteria created
Answer:I believe the answer is the first one Cyanobacteria filled the water and air with oxygen
Explanation:
As intense pressure is placed on the planet's limited resources, businesses are again turning to technological innovation. New and emerging technologies like those listed above should see human civilization through the 21st century and into the next with adequate supplies of __________ for people of all nations.
Answer:
technology
Explanation:
Technological innovation plays a crucial role in ensuring the sustainability of our planet's resources in the face of increasing demand and finite supplies. It is hoped that technology will allow the equitable distribution of essential resources such as food, water, and energy to sustain human civilization, yet a balance must be maintained, acknowledging the Earth's resource limits.
Addressing Resource Sustainability Through Technological Innovation
As human civilization progresses into the 21st century, there is a pivotal role that technological innovation plays in ensuring the sustainability of our planet's resources. Balancing the increasing pressures from population growth and the escalating demand for commodities, technology stands as both a beacon of hope and a field replete with challenges. Despite the socio-economic and environmental constraints, optimists believe that ongoing advancements in technology will bolster our capacity to maintain and distribute essential resources such as food, water, and energy to accommodate everyone across the globe. With the integration of sustainable practices and effective resource management, technology could indeed facilitate the fulfillment of human needs without depleting our natural assets.
However, this optimism is checked by voices cautioning against unfettered reliance on technology. Acknowledging that the Earth's resources are finite, it is imperative to consider the limitations of technology and recognize the need for a cultural shift towards sustainable living and reduced consumption, especially in affluent nations. As we continue to navigate the realities of the Anthropocene, a term that denotes the significant impact of humans on Earth's geology and ecosystems, it becomes evident that the alignment of technological development with sustainability principles holds the key to a viable future for all nationalities.
what are aquatic biomes ?
Answer:
Here are a few examples:
lakes/ponds.
rivers/streams.
estuaries.
wetlands.
intertidal regions.
Aquatic regions house numerous species of plants and animals, both large and small. ... The aquatic biome can be broken down into two basic regions, freshwater (i.e, ponds and rivers) and marine (i.e, oceans and estuaries). Freshwater Regions. Freshwater is defined as having a low salt concentration—usually less than 1%
In Alaskan wolves, the allele for grey hair (G) is dominant to the allele for brown hair (g). Two grey wolves are crossed. One of the wolves is homozygous for grey hair and the other is heterozygous. What percentage of the offspring are expected to have grey hair?
a. 25%
Selected:b. 50%This answer is incorrect.
c. 75%
d. 100%
Well, if one wolf is Homozygous for the dominant G allele, then it will be GG. One is heterozygous, meaning it’s Gg. So in a punnet square you’ll end up with GG,GG,Gg,and Gg. Since heterozygous also holds that dominant trait, it works as if it were a GG. The answer is 100%
In a cross between homozygous dominant (GG) and heterozygous (Gg) grey wolves, 100% of the offspring are expected to have grey hair, thanks to the dominance of the grey hair allele.
Explanation:In this case, we are dealing with hereditary traits in Alaskan wolves specifically related to hair color. The information provided tells us that the allele for grey hair (G) is dominant to the allele for brown hair (g). When crossing two grey wolves, one of which is homozygous for grey hair (GG) and the other is heterozygous (Gg), we use a Punnett Square to determine the possible genotypes of their offspring.
The Punnett Square for these parents would look like this:
Top row: G (from GG parent), G (from GG parent) Left column: G (from Gg parent), g (from Gg parent)
The results of the cross yield: GG, Gg, GG, Gg. Therefore, because both GG and Gg wolves display the grey hair color due to the dominance of the G allele, we conclude that 100% of the offspring are predicted to have grey hair.
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Select the correct answer. In a family, the father is affected by a genetic disorder. The son in the family has the same disease, but the daughters do not have it. What type of inheritance is this? A. Y-linked B. X-linked C. polygenic D. codominant
D codominant as father developed genes first Transfer to son
The winter is caused by _____.
A. direct sunlight striking Earth
B. Indirect sunlight striking Earth
C. Earth's closeness to the sun
D. Earth's far distance from the sun
The winter is caused by Indirect sunlight striking Earth.
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Answer:
Indirect sunlight striking Earth
Explanation:
Where is over 95% of incoming ultraviolet radiation absorbed
Answer:
The ozone and the atmosphere
Explanation:
Over 95% of incoming ultraviolet radiation is absorbed by the ozone layer in the stratosphere.
The ozone layer, located in the stratosphere at an altitude of approximately 10 to 50 kilometers (6 to 31 miles) above the Earth's surface, plays a crucial role in absorbing and filtering out harmful ultraviolet (UV) radiation from the sun. Ozone (O3) molecules are formed in the stratosphere through the photodissociation of molecular oxygen (O2) by solar UV radiation. The oxygen atoms produced then combine with other oxygen molecules to form ozone.
The ozone layer has a peak concentration of ozone at an altitude of approximately 20 to 25 kilometers (12 to 16 miles). In this region, ozone molecules effectively absorb and scatter much of the incoming UV-B and UV-C radiation from the sun. UV-B radiation is particularly damaging to living organisms and is known to cause skin cancer, cataracts, and harm to marine ecosystems.
The absorption of UV radiation by the ozone layer is crucial for protecting life on Earth from excessive exposure to harmful UV rays. Without the ozone layer, much more UV radiation would reach the Earth's surface, leading to increased risks of UV-related health issues and environmental damage.
However, the ozone layer has been threatened by human-made substances, such as chlorofluorocarbons (CFCs) and other ozone-depleting substances (ODS), which have led to the thinning and depletion of the ozone layer. International efforts, such as the Montreal Protocol, have been successful in phasing out many ODS, leading to gradual recovery of the ozone layer in recent years. Protecting and preserving the ozone layer remains a critical environmental goal to ensure the continued protection of life on our planet from the harmful effects of UV radiation.
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An explanation for the difference in amino acids between lamprey hemoglobin and human hemoglobin is
Explanation:the haemoglobin of lamprey is different from that of humans as it consists of characteriatics partly of vertebrates and partly of invertebrates.
It has a molecular weight equal to that of muscle haemoglobin but it is found to be very efficient in oxygen transport.
The haemoglobin in the oxygenated form is monomeric and undergoes association with diamers and Tetramers when they undergo disassociation.
Scientists suspect that modern horses have different dietary habits than horses that lived long ago. Which of the following would be best for a scientist to do to determine whether the dietary habits of horses have changed over time?
A. study the diet of modern horses
B. compare the teeth of modern horses to the teeth of modern donkeys
C. study the overall anatomy of a modern horse
D. compare the teeth of modern horses to fossilized teeth from ancient horses
(D)
Explanation:The teeth of an organism determine the type of diet it has. Through the domestication of the horse, humans have changed its diet over millennia depending on the climate and occupation.
Answer:
Letter D.
Explanation:
TTo determine the change in dietary habits of horses, the best approach from the ones presented is to compare dental features. Teeth can give different pieces of information. The structure of teeth makes it possible to find traces of the food eaten. The same structure also gives information about the food eaten thanks to the shape and borders of teeth.
Studying the diet of modern horses only gives information of the present.
Comparing teeth of horses and donkeys also focuses on the present only. In addition, it adds an element not related to the research (donkeys).
Studying the whole anatomy of a modern horse gives too much information, and all of it about the modern horse only.
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Which of the following is true of conifers?
a.Female cones produce pollen that fertilizes the egg.
b.Most coniferous trees have both male and female cones.
c.Male cones cannot produce pollen unless fertilized by the female cone.
d.Female cones produce pollen that is trapped by the male cones’ scales.
Answer:
The correct answer would be option B.
Explanation:
Coniferous trees carry both male and female sporophylls cones on the same mature sporophyte mostly. Conifers are monoecious plants because the bear both male and female cones such as pines. Pines, generating 2 different types of spores: female megaspores and male microspores.
Male cones are smaller in comparison of female cones. Scale present in a male cone contains the pollen that can reach to a female cone to make a egg or seed.
Thus, the correct answer is option b.
Answer:
Most coniferous trees have both male and female cones.
Explanation:
Your welcome.
Which macromolecule has she most likely damaged?
A a carbohydrate
B a steroid
C a nucleic acid
D a protein
She most likely damaged C a nucleic acid
Answer:
c
Explanation:
edge 2020
most asteroids _______.
1. revolve around Jupiter
2. are made of frozen gas and ice
3. are found between Mars and Jupiter
4. generate their own heat through nuclear fusion
?¿
Answer:
Explanation:
Asteroids do not revolve around Jupiter. Jupiter has its own moons and that is all that revolves around it that is easily visible.
Not all are made that way. In fact most are made out of rocks.
Three is correct. That's where they are.
Four is just absurd. If the earth can't do it, the other planets can't either.
Answer:
3. Are found between Mars and Jupiter
Explanation:
The person who answered this first is tottaly correct!
what physical property is used to identify matter based on solubility
Ability to dissolve:)
Need help asap!!! plzz (SCIENCE)
What term do scientists use to describe the chemical process in which oxygen and glucose react to release energy inside body cells?
(A)exhaling
(B)breathing
(C)inhaling
(D)respiration
Answer:
D. Respiration
Explanation:
D Respiration Because of your respiratory
Which is the change in size of a group of organisms of the same species over time? population growth death rate birth rate immigration and emigration
On edge.nuity that answer should be population growth.
Population growth is the change in size of a group of organisms of the same species over time.
What is population growth?Population growth is the increase in the number of humans on Earth. For most of human history our population size was relatively stable. But with innovation and industrialization, energy, food, water, and medical care became more available and reliable.
Population growth rate refers to the change in population over a unit time period, often expressed as a percentage of the number of individuals in the population at the beginning of that period.
The population growth rate is defined as the ratio between the annual increase in the population size and the total population for that year. The decline in the death rate and an increase in the birth rate due to advanced medical facilities. There are mainly four factors that affect population growth.
The correct answer is option A.
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when does an object break up due to gravity and tidal forces as it approaches a planet?A) when it moves past the planet very quickly B)when it passes the Roche limit C) when its density is very high D) when it becomes tidally locked to the planet
Answer:
B)when it passes the Roche limit
Explanation:
The Roche limit is the distance within which a celestial body that is held by its own gravitational forces shall disintegrate.
This is due to the effect of another celestial body exceeding the self attraction gravitational force held by the first celestial body.
Objects disperse and form rings in the orbit at the Roche limit.
Outside the Roche limit the objects tend to coalesce
Answer:
B) when it passes the Roche limit
Explanation: The Roche limit is the distance within which a celestial body that is held by its own gravitational forces shall disintegrate.
This is due to the effect of another celestial body exceeding the self attraction gravitational force held by the first celestial body.
Objects disperse and form rings in the orbit at the Roche limit.
Outside the Roche limit the objects tend to coalesce
Answer the following questions in the picture
C, D, B, B, C are the answers from 5-9
Of the following elements, which is the MOST reactive?
A. F
B. Cl
C. Ar
D. Ne
We can exclude Argon (Ar) and Neon (Ne) they are both very stable. Chlorine (Cl) is reactive but not as much as Fluorine (F). So my answer would be A.
(A)
ExplanationReactivity is an elements ability to gain an electron. So the better it is at "stealing" electrons, the more reactive it will be. The thing that makes fluorine so reactive is its electronegativity. Therefore, since fluorine has a higher electronegatvity than chlorine, fluorine is more reactive.
Which event occurs during prophase?
The sister chromatids separate.
The cytoplasm divides.
The spindle fibers form.
The spindle fibers break down.
Answer:
I would say C.
Explanation:
In both Meiosis | and Meiosis || the first phase (Also known as Prophase) the chromosomes become compact and answer C. is the closes to what happens.
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During prophase, the spindle fibers form. The separation of sister chromatids and the division of the cytoplasm happen in later stages of cell division.
Explanation:The event that occurs during prophase, the first phase of cell division, is the formation of spindle fibers. The microtubules that form the basis of the mitotic spindle extend between the centrosomes, pushing them farther apart as the microtubule fibers lengthen. The events such as 'sister chromatids separating' or 'cytoplasm dividing' occur in later stages of cell division, not in prophase.
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What is a gene?
A- a section of a protein that codes for DNA
B- the alternate version of a trait
C- the visible trait in the F1 generation
D- a section of DNA that codes for a specific trait
A gene is a section of DNA that codes for a specific trait or protein. It provides instructions for the production of a protein, determining an organism's traits. The correct answer to the original question is (D).
Explanation:A gene is a section of DNA that codes for a specific trait, so the correct answer to your question is (D). The primary function of a gene is to provide instructions for the production of a specific protein or a set of closely related proteins, which in turn determines an organism's traits. For instance, a gene in peas could be responsible for whether the peas are yellow or green. This DNA sequence is transcribed into mRNA, which is then translated into protein sequences. Thus, the gene (DNA) acts as the blueprint, guiding the cellular machinery to build proteins.
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Only small amounts of enzymes are required for reactions within cells because enzymes are______
A.fragile
B.reused
C.small molecules
D.constantly synthesized
-Hello There-
Great Question! The Answer To This Question Would Be "B"
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Answer: B. reused
Explanation:
Enzymes act as catalyst that speed up the rate of chemical reactions.
They are usually not changed during reactions, that is why it is required in small quantities in the cell since they are not altered and can be reused over and over again.
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How does heat capacity affect temperature change?
Answer:
The heat capacity is the slope of the plot of internal energy U with temperature T. The internal energy is energy that due to the rotation and vibrational energy a molecule possesses and as the temperature increases more rotational and vibrational energy levels becomes excited and so the internal energy increases.
Explanation:
chromosomes stay organized by winding themselves around this type of protein.
What is this protein?
Answer:histones
Explanation:
The proteins that bind the chromosome to form an organized pattern are the histones chromosomal proteins.it is the first step in organizing and packaging the DNA so that it can fit inside of the nucleus
What are the two lengths that all ellipses have (all planets)?
A. Minor and major axes
B. Horizontal and vertical length
C. Conic and isoconic length
D. X and Y axes
Answer: Option A
Explanation:
All the planets are elliptical in shape.There are two axes found in any ellipse of all the planets. The largest diameter in the ellipse is called as the major axis of the ellipse.
The shortest diameter of the ellipse is called as the minor axis. These two lengths are found in every planets of the universe.
Answer:
Option (A)
Explanation:
Generally, an ellipse is defined as a plane curve that borders any two focal points in such a way that for all of its points lies on the curve and the sum of the two distances to their focal points must remain constant.
The shape of most of the planets usually resembles an ellipse, which is basically comprised of two axes, which represents the diameters of the ellipse. Of the two, one is the longest and the other is the smallest, that forms the major and the minor axes respectively. They are always oriented perpendicular to each other.
When both of these axes are equal in terms of length then the ellipse represents a circle.
Thus, the correct answer is option (A).