What data provides the strongest evidence (most valid) that early Earth conditions provided what was necessary for life?
A- Fossil evidence showing that prokaryotic cells required an environment free of oxygen.
B- Genetic comparisons revealing that living and extinct organisms share commonalities.
C- Geological dating techniques supporting theories regarding Earth's age.
D- Geological studies proving that volcanic gases resemble those from early Earth.
Answer:
A - Fossil Evidence showing that prokaryotic cells required an environment free of oxygen.
Explanation:
Thanks OP for answering your own question!
The data that provides the strongest evidence (that is, the most valid evidence) that early Earth conditions provided what was necessary for life is revealed by genetic comparisons, which reveal that living and extinct organisms share commonalities. This is option B.
What are genetic comparisons in evolution?Genetic comparisons are the most direct and reliable source of evidence supporting the theory of common ancestry and the origin of life on Earth. All living organisms share a common set of genetic building blocks, such as DNA and RNA, and use the same genetic code to translate this information into the proteins that make up living organisms. Genetic comparisons reveal similarities between living organisms and extinct organisms, such as ancient bacteria and archaea, which provides further evidence for the common ancestry of all life on Earth.
Hence, it is revealed by genetic comparisons, which reveal that living and extinct organisms share commonalities. This is option B.
Learn more about the genetic comparisons here.
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What is speciation ? List four factors that could lead to speciation. Which of tjese cannot be a major factor in the speciation of a self-pollinating plant species? Explain. Give reason to justify your answer.
pesto ica está.
➜ Speciation is the formation of new species from the pre-existing population.
Factors responsible for speciation:
Genetic drift. Natural selection.Geographical isolation. Mutation.Geographical isolation cannot be a major factor in the speciation of a self-pollinating plant species because physical barrier cannot be created in self-pollinating plants.
Speciation is how a new kind of plant or animal species is created. Speciation occurs when a group within a species separates from other members of its species and develops its own unique characteristics.
Why are dark colored pocket mice found in the dark, rocky areas of the desert?
their fur is that color so they can camoflaugue with their surroundings
Answer:
Because God put them there on purpose. For example, they could hide in little tunnels in the ground to hide from predators, and also, so it could camoflauge with it's surroundings. Have a great day!
Explanation:
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Which of the following is most helpful for identifying an organism using a dichotomous key?
O Its average lifespan.
0 Its sources of food.
O Its habitat.
O Its physical structures.
Which of the following are not extremeophiles?
Answer:
Fish living in open oceans
Explanation:
Number 6 please answer
___________________________________________________________
Crab Rave
___________________________________________________________
Answer:
the answer is A.
Explanation:
Ive taken this test before like last week so y E a h
Which statement about evolution is correct?
a
Individuals can change their behavior, so individuals can evolve.
b
Evolution applies to genetic changes over time in an entire population..
c
Evolution applies to genetic changes over time, so depending on the lifespan of the organism, they may have time to evolve.
d
Populations of organisms do not change, so if a variation in the organism's genetic makeup occurs, a new population is started.
Answer:
Its C i thing......................
Explanation:
...
plants contain vascular tissue which consists of cells that make up tube strutures that...
(what does these tissues do)
A transports only food along the stem
B transports only water along the stem
C transports materials along only the leaves
D transports materials along the stem of a plant
Answer:
These cells make up ground tissue, which will be discussed in another concept. ... Meristematic tissues consist of three types, based on their location in the plant. ... Intercalary meristems occur only in monocots, at the bases of leaf blades and at ... The stem of the plant connects the roots to the leaves, helping to transport ...
Explanation:
What is used to regulate gas intake and output with a plant?
Answer-
The plants stomata!
Stomata regulate transpiration and CO2 intake by changing its size depending on the environmental signals. In optimum conditions, stomata are wide open, allowing gaseous exchange with the atmosphere.
PLEASE HELP!!
Why is the ozone layer important to living organisms on Earth?
helps remove harmful nitrogen and sulfur compounds from the atmosphere
helps filter infrared radiation harmful to plants and animals
helps filter out ultraviolet radiation harmful to plants and animals
provides protection from solar radiation that warms the atmosphere
Answer:
helps filter out ultraviolet radiation harmful to plants and animals
____________The following codon belongs to an mRNA molecule: TAC.
True
False
Answer:
true
Explanation:
because the TAC does in fact belong to an mRNA molecule
Which statement best compares gamma rays to the other components of the
electromagnetic spectrum?
Gamma rays have the lowest frequency and least energy.
Gamma rays have the highest frequency and least energy.
Gamma rays have the lowest frequency and greatest energy.
Gamma rays have the highest frequency and greatest energy.
Answer: c
Explanation:
which team did springbok starting playing with in 2019
Bacteria use sugar provided by legumes to produce nitrogen-containing compounds. An
example would be
Answer:
Examples of this type of nitrogen-fixing bacteria include species of Azotobacter, Bacillus, Clostridium, and Klebsiella. As previously noted, these organisms must find their own source of energy, typically by oxidizing organic molecules released by other organisms or from decomposition.
Explanation:
What type of galaxies do scientist believe to be the youngest in our universe
A. Rich galaxies
B. Nuclear galaxies
C. Spiral galaxies
D. Irregular galaxies
Answer:
C. Spiral Galaxies is the answer
Answer:
spiral galaxies
Explanation:
6. What essential substances are stored by your bones
(1 Point)
Phosphorus
Calcium
red blood cells
O white blood cells
What role did the Yam play in the expansion of the Mongol Empire?
Answer:
The yam was the cornerstone of Mongol administration and allowed the Great Khan to run one of the largest empires in history.
Explanation:
Answer:
The yam was the cornerstone of Mongol administration and allowed the Great Khan to run one of the largest empires in history.
Explanation:
that is your answer, have a great day!
Fluorine, chlorine, bromine, iodine, and astatine make up group 17, the halogens. Why are these elements grouped together?
A They are all very reactive nonmetals with similar chemical properties.
B They are all nonreactive gases with similar physical properties.
C Their atoms all have 8 electrons in their outer energy levels.
D They all have the same atomic number.
Answer:
It is A, They are all very reactive nonmetals with similar chemical properties.
Nabeel is trying to determine whether the slope of the ground affects the growth rates of plants. He just finished taking measurements of plant heights in various locations over a period of time. Now, he is starting to compare his measurements and look for patterns. Which step of the scientific method is Nabeel on?
Answer:
Experiment
Explanation:
Scientific methods includes the step by step procedures in science of solving problems.
It has four basic steps this include, Characterizations which is the observations, definitions, and measurements of the subject that is involved in the research.
Hypotheses is formulated which is the theoretical explanations of the problems to be solved.
Predictions are made from the hypothesis formulated and
Experiments which is done to validate the hypothesis. It includes DAT collection, data analysis, interpretation of results. Nabeel is at the experiment stage where he is collecting data on plant and comparing the data so he can make inference that can help validate his hypothesis.
The diagram for this question is missing, but I'll try to solve it nonetheless, for PLATO users. I do believe the answer is Test the hypothesis with an investigation, at least when thinking of the guy up above me's answer....
which of the following is true of reproduction? A.only small organisms have a high chance to reproduce B.only large organisms have a high chance to reproduce C.all genes that are beneficial are passed On to the Next Generation. D. on average the fittest organisms fast on jeans the Next Generation.
Answer:
D
Explanation:
compare and contrast the processes of mitosis (asexual reproduction) and meiosis (sexual reproduction).
Answer:
Diffrence:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. parent. During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote. Meiosis is the type of cell division that produces gametes.
This is the study of the natural processes that occur in the environment and how humans can affect them?
A. Biodiversity
B. Environmental science
C. Ecology
D. Ecosystems
(Thank you for helping !)
Answer: Ecology is the study of organisms and how they interact with the environment around them. An ecologist studies the relationship between living things and their habitats.
Explanation:
Where does a clinical trial usually take place?
O A. In a hospital
B. In a test tube
c. In a placebo
D. In a petri dish
Ii want a brief and brief description of a bottlenose dolphin
Answer:
Explanation:
Bottle nose dolphines live in the water. There name is Tursiops.
Boom done
All living things contain genetic material known as _________________
Answer:
DNA.................
Answer:
DNA and/or RNA
Hope that helps!
Explanation:
Look at the map above. what type of weather is the northwest having?
A cell with only one set of chromosomes is called [ diploid or haploid ] cell.
Answer:
A cell with only one set of chromosomes is called a haploid cell.
Explain mendel's experiment with peas on inheritence of characters considering only one visible contrasting character.
Ples answer in making points, it is for 5 marks.
➜ Mendel conducted breeding experiments with garden peas:
[i] He studied plants (pure) of a tall/short varities.
[ii] He crossed them and obtained F1 progeny.
[iii] He found that F1 progeny was all tall plants.
[iv] He selfed the (hybrid) plants if F1 progeny.
[v] He found that in F2 progeny there were tall as well as short plants.
[vi] The three quarter plants were tall and one quarter was short.
(or any other contrasting character may be taken).
Note: Here, F1 means First fillial generation and F2 means Second fillial generation.
Mendel selected garden pea for his breeding experiment because of its contrasting characters such as height of the plant, yellow or green seed, round or wrinkled seed shape. ... Then he allowed the hybrid plants of F1 generation to self-pollinated. In F2 generation all the progeny were tall as well as short plants...We used to take this character, we may choose different.
Explain the relationships and trade-offs among amounts of skin pigmentation, Vitamin D production, and protection from UV radiation.
Answer:
Ultraviolet radiation leads to DNA mutations in the melanocytes, which are skin cells that contain melanin. Melanin level is inversely associated with the ability of skin cells to produce vitamin D
Explanation:
Ultraviolet (UV) radiation is a well-known environmental factor that causes mutations in the DNA of melanocytes, which are skin cells that produce melanin. Moreover, melanin is a protective pigment whose main function is to block UV radiation, thereby protecting the body from DNA damage and, consequently, from cancer (skin cancer). Abundant melanin levels can decrease the ability of the body to synthesize vitamin D, the only vitamin that can be synthesized with sunlight. In consequence, darker skin is associated with a higher risk of having vitamin D deficiency.
c) Describe the phenotype ratio for their offspring. (2 points)