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maxonik [38]
3 years ago
14

What are the shadows during a solar eclipse called?

Biology
1 answer:
diamong [38]3 years ago
8 0

Answer:

the shadows are called umbra and penumbra

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Which of the following statements about archaea are true cowan?A) They are prokaryotes.B) They lack peptidoglycan in their cell
Veseljchak [2.6K]

Answer:

All the options are true except option D.

Explanation:

Archaea are a group of prokaryotic organisms i.e. they lack a membrane bound nucleus. They are one of the the three domains of life (the other two being bacteria and eukarya). Archeans possess a cell wall like bacteria but it is not composed of peptidoglycan, like bacteria cell wall.

Archeans are generally known to be found in very severe environmental conditions, hence, they are referred to as extremophiles e.g Some are thermoacidophiles i.e. thrive in very hot and acidic environment while others are extreme halophiles i.e. thrive in salty regions. Archeans known as methanogens produce methane gas as a product of metabolism from carbon dioxide and hydrogen.

However, the domain archeae was only found to be in existence recently after the domain bacteria, hence, they are not considered to evolve before the domain bacteria.

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3 years ago
as water soaks underground, it first passes through a rock layer that has pores that are mostly filled with air. what zone is th
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This zone is called as the zone of aeration. It is present between the earth's surface and the water table, and its main constituents are the soil and rocks. The pores which are present in this zone are partly filled with water, and may mix up with air, causing aeration.
7 0
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Give at least 10 pieces of factual information about how reaction times slows when you get older
Katena32 [7]

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Reflexes do slow with age. Physical changes in nerve fibers slow the speed of conduction. And the parts of the brain involved in motor control lose cells over time.

Researchers found that the brain's response time begins to decline at age 24. The descent is a slow, but nonetheless, steady one.

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It is most commonly believed that India or China has the highest population density in the
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Monaco

Explanation:

Hope this helped :)

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Which is a reactant for the photosynthesis reaction?
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answer:

carbon dioxide !!

explanation:

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1 year ago
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