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Dvinal [7]
2 years ago
9

An index fossil represents a species that lived during

Biology
1 answer:
Vikentia [17]2 years ago
3 0

Answer:

geologic time

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Please help me i don’t understand
Eddi Din [679]
1. Biogeography, the study of the geographic distribution of plants, animals, and other forms of life. It is concerned not only with habitation patterns but also with the factors responsible for variations in distribution.

2. weathering and other natural forces break down the substrate, rock, enough for the establishment of certain hearty plants and lichens with few soil requirements, known as pioneer species. These species help to further break down the mineral-rich lava into soil where other, less hardy species can grow and eventually replace the pioneer species. In addition, as these early species grow and die, they add to an ever-growing layer of decomposing organic material and contribute to soil formation. This process repeats multiple times during succession. At each stage, new species move into an area, often due to changes to the environment made by the preceding species, and may replace their predecessors. At some point, the community may reach a relatively stable state and stop changing in composition. However, it's unclear if there is always—or even usually—a stable endpoint to succession.

3. I don’t have the video so I’m going to take. Wild guess. Just look up types of finches

4. Broadly speaking, different species are unable to interbreed and produce healthy, fertile offspring due to barriers called mechanisms of reproductive isolation.
These barriers can be split into two categories based on when they act: prezygotic and postzygotic.

I tried my best hope this helps :)
6 0
3 years ago
Why is water important to cells
seraphim [82]
Because with that the mitochondria will make ATP (energy) for the cell and your body

I just learned that today XD
6 0
3 years ago
What is an example of quantitative variation?
iVinArrow [24]

Height and body weight

7 0
3 years ago
Which statements describe dark matter? Check all that apply.
Bad White [126]

Answer:Dark matter is invisible and does not emit electromagnetic radiation. Dark matter is part of a theory that hypothesis the existence of a counterpart to the particles we know in physics, in order to balance the universe that otherwise would be largely unbalanced right now. However, the theory right now is not yet proven.

Explanation:done

6 0
3 years ago
5 What are the ocean zones of a marine ecosystem, from most shallow to deepest?
aleksley [76]

Answer:

There

Explanation:

The ocean is divided into five zones: the epipelagic zone, or upper open ocean (surface to 650 feet deep); the mesopelagic zone, or middle open ocean (650-3,300 feet deep); the bathypelagic zone, or lower open ocean (3,300-13,000 feet deep); the abyssopelagic zone, or abyss (13,000-20,000 feet deep); and the ...

6 0
3 years ago
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