3 years ago

Of all the species that have ever lived on planet earth, what percentage are now extinct?

Biology

1 answer:

erica [24]3 years ago

4 0

I think it's 90% but I am not sure.

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Represents the transfer of energy through a series of organisms in a community. This energy flow from one trophic level to the o

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Answer:

I believe the answer is A) energy pyramid

Explanation:

It's talking about trophic levels, as opposed to individual organisms.

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3 years ago

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What rule of magnetism is illustrated by the lines of the iron filings with unlike poles?

Debora [2.8K]

Answer:

The rule of magnetism illustrated is the field lines are more concentrated at the poles and also about the direction of magnetic field.

Explanation:

Every magnet has two pole, north pole and south pole. The like poles repel each other and unlike poles attract each other.
The direction of magnetic field is from north to south that can be seen by the iron filling experiment.
When the iron fillings are kept near the bar magnet, we observe that most of the fillings are attached to either poles.
It is due to the fact that the concentration of magnetic field is highest at the poles.

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Name one reason life was impossible on early earth

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Mainly because it was extremely hot at the beginning of Earth's time.

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Kristen cut her hand on a piece of glass. As the blood clots, how do white blood cells prevent bacteria on the glass from infect

gayaneshka [121]

So white blood cell’s(WBCs for short) main job is to fight infections.
They do this by swallowing the infection.

You see,WBCs do not have a permanent shape.this means that they enlarge and decrease size of parts of their body.So they grow two long arm like structures called pseudopodia which swallow the infection.(pseudopodia means false feet).
You can see the process in the photo I attached from google

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