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algol [13]
2 years ago
5

Why do animal cells not need central vacuoles?

Biology
1 answer:
Keith_Richards [23]2 years ago
3 0

Answer:

B:animal cells have cell walls

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Which of the following is not valid evidence of global climate change?
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The best answer is (1)

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List the layers contained in the atmosphere and describe what is in each layer.
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Answer:

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Thermosphere - The aurora (Northern Lights and Southern Lights) mostly occur in the thermosphere. The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere. ... Temperatures in the upper thermosphere can range from about 500° C (932° F) to 2,000° C (3,632° F) or higher.

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Troposphere-The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.

i hope this helps, good luck :)

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2 years ago
Where do the electrons needed by photosystem ii originate?
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The electrons needed by photosystem ii originate from water.

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