Answer: The answer is the D. "Observation" is not a variable in an experiment.
Explanation: Research variables are factors that can be manipulated, measured or those that we try to explain through other variables. "Observation" is not a variable in an experiment, but it is the first step and fundamental part in the scientific method, in which the experiments are contained (experimentation stage). Observation is the information recorded during an experiment, obtained through the senses or through the registration of information on scientific instruments.
Observation is not a type of variable in a scientific experiment.
When performing an experiment, we can identify three kinds of variables:
Dependent variableIndependent variableControl variableA dependent variable is the one we will be focused on during the experiment, it is what we will be measuring. An independent variable is one that will not change in response to other variables in the experiment, it is not affected by the others and is often changed. Lastly, a control variable is any variable that we keep the same throughout the experiment. Since these are the only 3 variables in an experiment, we can say that only option D is correct, it is not a type of variable.
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What's the greenhouse effect?
A. The release of extra moisture from water vapor
B. Human-caused global warming
C. The regulation of atmospheric and surface temperatures
D. The trapping of warm air in cities
Answer:c
Explanation:
Final answer:
The greenhouse effect is a natural phenomenon where greenhouse gases in the Earth's atmosphere trap heat, maintaining the planet's temperature at a level suitable for life. Human activities have increased the concentration of these gases, leading to an enhanced effect and contributing to global warming and climate change.
Explanation:
Understanding the Greenhouse Effect
The greenhouse effect is a natural process that warms the Earth's surface. When the sun's energy reaches the Earth, some of it is reflected to space and the rest is absorbed and re-radiated as heat. Greenhouse gases in the atmosphere, such as carbon dioxide, methane, and water vapor, trap this heat, effectively insulating the planet. This process helps to maintain the temperature of our planet at a level suitable for life.
Option D is the correct definition: Greenhouse gases in the lower atmosphere trap heat from outgoing solar radiation causing the atmosphere to warm. However, due to human activities like burning fossil fuels and deforestation, the concentration of these gases in the atmosphere is increasing, leading to an enhanced greenhouse effect. This results in higher temperatures on Earth, a trend commonly referred to as global warming, which is a major component of climate change.
Society is concerned about the impact of human activities on the greenhouse gas effect because these activities are significantly strengthening the effect, trapping more heat, and contributing to global climate changes such as more extreme weather events and rising sea levels.
Which of the following shows the correct order of structures?
A.
cells tissues organ systems organs
B.
cells organ systems tissues organs
C.
cells tissues organs organ systems
D.
cells organs tissues organ systems
The answer is C cause organ system is like respiratory system consist of many organs including nose, trachea, and lungs
Final answer:
The correct order of structures from simplest to most complex is cells, tissues, organs, and organ systems, aligning with option C.
Explanation:
The correct order of structures, from the simplest to the most complex, is cells, tissues, organs, and organ systems. Accordingly, the answer to the student's question is C. cells → tissues → organs → organ systems.
Groups of cells with similar structures and functions are known as tissues.
Organ systems are made up of different organs that work together to perform a complex function.
Cells are the basic structural and functional units of living organisms. Tissues are groups of cells with similar structure and function.
Why does weather vary from day to day?
A. because weather is a complex interaction among many different variables that are constantly changing
B. because cold fronts are always followed by a series of colder fronts, before a warm front returns
C. because the Sun's energy heats all parts of the Earth evenly but does not heat the atmosphere
D. because the rotation of the Earth causes the atmosphere to expand and contract as it nears the Sun or Moon
Answer:
A
Explanation:
D is not correct because the atmosphere doesn't expand, C isn't correct because the Sun doesn't heat all the Earth evenly (hence different climates), B is not correct because cold fronts can be singular, so it has to be A
Which statement about the immune system is false?
What are the options?
Which of the following is NOT an area where maritime tropical air masses that affect North America originate? (1 point) Gulf of Mexi\co Caribbean Sea Hudson Bay Atlantic Ocean
Answer:
Caribbean Sea
Explanation:
Answer:
1) Caribbean Sea
2) I didn't have the figure (sorry)
3) i didn't have the figure (im really sorry)
4) cP
5) an occluded front forms
6) warmer, less dense air
7) convergent and counterclockwise
8) tropics
9) tornado
10) 5 and 20 degrees
11) warmest temperatures
12) temperature and precipitation
13) humid tropical
14) California
15) Most precipitation falls during winter (I know you didn't put this one up, but I thought I'd give you the answer anyways.)
16) steppe
17) It compresses and warms.
18) polar
19) It increases the amount of solar radiation that is reflected into space.
20) small seasonal variations in temperature
21) water vapor
22) increased
23) global rise in sea level
24) Ocean temperatures will increase
How does water heat earth
Answer:
The water covers the 71% of the earth's surface and the water gets hotter fast as compared to that of the land. The water makes the surrounding air warm which flows from the equator region to the polar region.
Explanation: The hot air moves from a hotter region to the colder region making the colder area warm. This is how the water makes most part of the earth hot.
Answer: Water carries heat from the equator toward the poles
Explanation:
i got it right on edge2021 culumitive exam last one
All algae are A.heterotrophs B.autotrophs C.parasitic D.anaerobes
Answer:
most algae are autotrophs or more specifically, photoautotrophs
Explanation:
All algae are Autotrophs.
Option B
Explanation:
Most of the algae plants are known to be from the autotrophs, or the better term for them is known to be photoautotrophs. Autotrophs are the organisms which is able to produce their own nutrition that is why algae are able to make their own food substances. The term photo is used because of the light with the help of the light algae is able to make their own nutritional benefits and substances. Only higher plants like algae are able to make their own nutritional benefits.
___________. Is a process that breaks water down into the gases hydrogen and oxygen
Answer:
Water splitting is a process that breaks water down into the gases hydrogen and oxygen
Explanation:
Gas hydrogen and water
How long can dinosaurs bang for?
Probably like 2 hours or so
Determining the exact duration of dinosaur mating is challenging due to limited direct evidence. Analogies with modern relatives suggest varied behaviors, emphasizing the importance of species-specific factors in dinosaur reproduction.
Determining the mating duration of dinosaurs is a challenging task as it involves interpreting behaviors from fossilized evidence. Fossils provide insights into dinosaur anatomy, but behaviors, including mating rituals, are more challenging to discern. Researchers rely on indirect evidence such as trackways, nesting sites, and bone structures.
The duration of dinosaur mating, or "dinosaur romance," is speculative due to limited direct evidence. Analogies with modern-day reptiles and birds, the closest living relatives of dinosaurs, provide some context. These animals exhibit a wide range of mating behaviors, from brief copulation to more extended courtship rituals.
Factors influencing mating duration in dinosaurs would likely include species-specific behaviors, environmental conditions, and reproductive strategies. Some dinosaurs may have engaged in elaborate courtship displays, while others may have had more straightforward mating behaviors.
In conclusion, the specific duration of dinosaur mating remains uncertain due to the limitations of interpreting behaviors from the fossil record. While modern analogs offer some insights, each dinosaur species likely had unique reproductive strategies that were influenced by their environment and evolutionary adaptations.
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How does the greenhouse effect trap heat?
Answer: Solar energy absorbed at Earth's surface is radiated back into the atmosphere as heat. As the heat makes its way through the atmosphere and back out to space, greenhouse gases absorb much of it. ... They radiate the heat back to the Earth's surface, to another greenhouse gas molecule, or out to space.
Haploid cells are.........
Answer:
produced during meiosis. Which is a type of cell division that reduces the number of chromosomes in a parent diploid cell by half.
Answer:
C) sex cells with half the original chromosome number
Answer Choices:
A) mutated cells with missing chromosomes
B) fused cells with double the chromosome number
C) sex cells with half the original chromosome number
D) sex cells with the original chromosome number as the parent cell
5.
Over millions of years of time, an island's vegetation shifts. The seed producing plants that
dominated the early origins of the island die out in favor of new species of plants that do
not produce seeds but provide a good habitat for insects. How is this change likely to
affect a species of birds that uses seeds as its primary source of lood and insects as a
secondary food source
A.The species will maintain its heritable traits while learning to make insects their
primary food source,
B.The species will decline and become endangered because its adaptations have
reduced utility
C.The species will split into two one adapted to eating seeds and a second
adapted to eating insects
D.over time a shift in trolts will be olvserved as the species adapts to an insect diet.
over time a shift in trolts will be olvserved as the species adapts to an insect diet
Final answer:
The species of birds that relied on seeds may decline due to the reduced utility of their adaptations, but if adaptable, trait shifts will occur towards an insect diet, potentially echoing Darwin's finches' adaptive radiation on the Galapagos Islands.
Explanation:
When an island's vegetation shifts and the seed-producing plants that previously dominated are replaced by non-seed-producing plants favorable to insects, the species of birds that primarily rely on seeds for food are likely to be affected in a specific way. Over time, if the birds cannot adapt to the available food sources, they may decline and become endangered due to the reduced utility of their seed-eating adaptations. However, if they have the flexibility to change their diet and learn to make insects their primary food source, then over time a shift in traits will be observed as the species adapts to the new food source through natural selection, potentially leading to an evolutionarily significant change in beak morphology or feeding behavior.
A fish eats food, and then swims. How does this example show the Law of Conservation of Energy?
The example of a fish eating and then swimming illustrates the Law of Conservation of Energy. The fish converts the chemical energy in its food into kinetic energy to swim, demonstrating that energy cannot be created or destroyed, only transformed.
Explanation:The example of a fish eating food, and then using the energy from that food to swim, demonstrates the Law of Conservation of Energy. This law states that energy cannot be created or destroyed, but can only be changed from one form to another. In this case, the fish converts the chemical energy stored in its food into kinetic energy, enabling it to swim. This demonstrates the principle of conservation, wherein the total energy within a closed system (in this case, the fish) remains constant.
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What happens next after an mRNA strand separates from a DNA molecule?
Answer: DNA is essentially a storage molecule. It contains all of the instructions a cell needs to sustain itself. These instructions are found within genes, which are sections of DNA made up of specific sequences of nucleotides. In order to be implemented, the instructions contained within genes must be expressed, or copied into a form that can be used by cells to produce the proteins needed to support life.
Explanation:
Which statement is true about passive transport?
Chemical energy is not required.
Chemical energy known as ATP is required.
Substances move from low concentration to low concentration.
Substances move from low concentration to high concentration.
Answer:
I think its chemical energy is not required because passive transport doesn't need energy at all
Answer:
A
Explanation:
bc i got it right on my test
How does a closed lake differ from an open lake?
A. A closed lake has no outlet stream. B. A closed lake has no inlet stream. C. A closed lake contains fresh water. D. A closed lake contains standing water.
Answer.
A I belive
Explanation:
All lakes are either open or closed. If water leaves a lake by a river or other outlet, it is said to be open.
Answer:
Option A, A closed lake has no outlet stream
Explanation:
An open lake is formed at a place where the water is poured in by inlet stream. Open lake also has outlet stream for removal of water. while in a closed lake , water only leaves by the process of evaporation. The water in a closed lake gets salty as it remains standing and when it evaporates it leaves behind salt and other dissolved constituents thereby remaining water salty.
hence, Option A is correct
Bacteria, viruses, fungi, and protists have a bad reputation. People focus on the diseases they cause, the food they rot, and the bad odors they creat, even though most types cause no harm to living things. One type is an exception. It is non-living and can only reproduce by hurting its host. Which one of these groups is a none-living agent of disease?
A. Bacteria
B. Viruses
C. Fungi
D. Protists
B.
Viruses are classified as biological agents instead of a living things, $& they are only made of genetic material.
Viruses are non-living disease agents that can only reproduce by infecting a host cell, making B. Viruses the correct answer to the question about which group is a non-living agent of disease.
Explanation:The non-living agent of disease that can only reproduce by hurting its host among the options provided is B. Viruses. Unlike bacteria, fungi, and protists, which are living organisms, viruses consist of DNA or RNA encapsulated in a protein coat and are incapable of reproducing or carrying out metabolic processes on their own. They require a host cell's machinery for replication.
Viruses are known for causing diseases like colds, the flu, and more serious conditions such as hepatitis and AIDS. While some microorganisms like bacteria and protozoa can be combated with antibiotics and have free-living forms, viruses are entirely dependent on a host for their life cycle and do not respond to antibiotics. Antiviral drugs can treat viral infections since they are designed to target the specific parts of the virus's life cycle that occur within human cells.
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What term refers to group behavior seen in animals of a similar type?
A.
swarm behavior
B.
predation defense
C.
structural adaptation
D.
physiological adaptation
swarm behavior
Answer: A
Answer is A
The rest are incorrect
An oak tree gets nourishment from the Sun and produces acorns. Squirrels eat the acorns. What has happened to the matter consumed by the squirrel?
A.
The matter is completely consumed by the squirrel.
B.
The matter is completely eliminated by the squirrel as waste.
C.
The matter is converted to energy and carbon molecules.
the answer is A matter is completely consumed consumed by the squirrel
Answer:
The matter is converted to energy and carbon molecules. letter C
Explanation:
I know this because I got the answer wrong and saw that this was the correct one
Which finding would have disproved Virchow’s hypothesis?
Animalcules are not organisms.
Animals are made of non–cell-based matter.
Plants are made of non–cell-based matter.
Cells can generate from nonliving matter.
Answer:
The correct answer will be option-Cells can generate from nonliving matter.
Explanation:
Rudolf Virchow is known for modifying the cell theory proposed by the Schleiden and Schwann in 1839. He added to the existed theory and suggested that all living cell come from the pre-existed cells.
But this hypothesis was disproved after the Miller and Urey performed an experiment in 1953 and demonstrated that cells were originated from the non-living matter present in the atmosphere during primordial time.
This fact disproved the hypothesis of Virchow ans thus is the correct answer.
Answer:
d is correct
Explanation:
For a conclusion to be accepted by the scientific community, the data must be accurate, free from error, and reproducible. varied. unique. surprising.
Answer:
reproducible.
Explanation:
Answer:
Reproducible
Explanation:
A scientific experiment is carried out to test a hypothesis. The results of the experiment are accepted by the scientific community only if the same results are obtained by performing the experiment again, that is, the results must be reproducible. If results from one experiment are not reproducible, they are refuted by the community.
Who does osmosis have a crush on
Answer:
Osmosis "Ozzy" Jones is the titular main protagonist of the film. He is a white blood cell and a rebel cop. He doesn't have much respect for authority. His best friend is Drix and he has a crush on Leah Estrogen.
...
Osmosis Jones.
Explanation:
what is residual waste ? a. waste that can be composted b. waste that can be recycled c. waste that can be recycled, but not composted d. waste that cannot be composted or recycled
Answer:
C, a waste that can be recycled, but not composted
Explanation:
waste that can be recycled, but not composted, residual waste is things leather, rubber, textiles, glass, industrial equipment, electronics, pumps, piping, storage tanks, filters, fertilizers, pesticides, pharmaceutical waste, detergents and cleaners, photographic film and paper, you can reporpose it but it will not compost
Answer:
d. waste that cannot be composted or recycled
Explanation:
The waste that is left once all the recyclable waste is removed is called residual waste. It includes the waste materials that can not be subjected to recycling or composting. These waste materials cannot be re-used.
Most of the residual waste is removed from the system by burying them in landfills. Some of the examples of residual wastes are CDs, DVDs, crayons, chewing gums, etc.
if you were trying to heat up soup,
would you want to use a good
thermal conductor or a good
thermal insulator explain your answer
Answer:
A good thermal conductor
Explanation:
A conductor creates and transfers heat for example: a metal pot. While and insulator just keeps whatever is already hot at the same temperature.
Answer:
Good thermal conductor
Explanation:
When we heat the soup in container.. The container should be made up of good thermal conductor which allow flow of heat when we put it in on fire and transfer the heat to the soup.
.
describe one way energy from sunlight moves through a food chain in this food web. identify producers and consumers in the food chain.
Answer:
Energy is absorbed by plants in the form of sunlight and grow. These plants are eaten by smaller consumers (such as the grasshopper) and thus the energy moves up the food chain as the grasshopper is eaten by another and so on.
What is the definition of energy?
Answer:
Energy is basically power. It's power that can help you be more active.
Google says
the strength and vitality required for sustained physical or mental activity.
You will be crowned brainliest. K12 student here.
Which one of the following supports the hypothesis that life has changed over time?
A) Prokaryotes have no nucleus.
B) The cell has no membrane.
C) Some fossil plants have deep roots.
D) Fossils are distinct from rock layer to rock layer.
Please and Thank you.
An answer choice that supports the hypothesis that life has changed over time, is;
D) Fossils are distinct from rock layer to rock layer.
This is because the fossils that happen to be at the very top layer are so believed to be from recent forms of life.
D. Fossils are distinct from rock layer to rock layer.
The different fossils in the different layers can show exactly how life has changed and evolved because you can basically see a timeline of life in the rock layers.
Hamza holds hands close to a hot surface. He can feel the infrared waves but cannot see them. What explains Hamza’s observations
Answer:
Radiation
Explanation:
Hamza is observing radiation. Well, of course, the safe kind. Radiation is the release of energy in the form of electromagnetic waves or active subatomic particles. In this case, Hamza is observing heat radiation, which cannot harm him, as compared to UV or Gamma radiation.
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the terms global warming and climate change are often used synonymously what do these terms mean
The earth is getting warmer and the climte has a dramatic change that affects us on the planet
Final answer:
Global warming refers to the ongoing rise in Earth's average surface temperature, primarily due to human-induced increases in greenhouse gases. Climate change encompasses broader changes in weather patterns over long periods, including temperature shifts, precipitation changes, and more. The distinction between the two terms highlights the complexity of Earth's changing climate.
Explanation:
The terms "global warming" and "climate change" are often used interchangeably but signify different phenomena. Global warming refers to the recent and ongoing rise in global average temperature near Earth's surface, primarily caused by increasing concentrations of greenhouse gases in the atmosphere. This phenomenon is a major driver behind the changing climate patterns observed around the world. However, global warming is just one aspect of the broader term climate change.
Climate change, on the other hand, encompasses long-term changes in the average weather patterns that have come to define Earth's local, regional, and global climates. These changes include major shifts in temperature, precipitation, or wind patterns, among other effects, that occur over several decades or longer. While climate change is commonly associated with an increase in global temperatures, it also acknowledges that the short-term variations in this process can include both higher and lower temperatures, despite the overarching trend toward warmth.
The distinction between these terms matters because it highlights the complexity and multifaceted nature of Earth's changing climate. By understanding the differences, we can better appreciate the full scope of climate science and the various impacts of human activity on our planet.
What is an organism’s niche?
Answer:
The term niche, when used in the science of ecological biology, is used to define an organism's role in an ecosystem. Not only does its niche include the environment that a given organism lives in, but it also includes the organism's "job" in that environment
Explanation:
credit to Thought.co
Answer:
An ecological niche is the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces. A species' niche includes all of its interactions with the biotic and abiotic factors of its environment