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joja [24]
2 years ago
12

!!!!!!!!!!!!H-E-L-P!!!!!!!!!! How do index fossils help scientists establish how old rocks and other fossils are? In your answer

, include fossils in the same layer of rock, in a lower layer of rock, and in a higher layer of rock compared to an index fossil.
Biology
1 answer:
Artist 52 [7]2 years ago
6 0

Answer:

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.

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The answer is speciation by geographic isolation. When the population of a species gets separated due to reasons such as continental drift, mountains, canyons, etc. then each separated group of population may survive and adapt to their respective environment leading to speciation. These barriers do not allow the evolving populations to interbreed initially and over time when they evolve into different species they become completely reproductively isolated.

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Answer: Life would cease to exist.

Explanation:

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Life would indeed cease to exist if this carbon cycle stops due to the importance of carbon to functioning of living organisms. Important processes which bring about the recycling of carbon between living ( biotic) and non living (abiotic) components of an ecosystem are:

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--> respiration: animals respire to break down sugar leading to liberation of carbondioxide and water as wastes

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5 0
3 years ago
Where does interphase and cytokinesis fit in relation to the four stages of mitosis?
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Explanation:

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What is one use of hydrogen?​
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Answer:

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