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kvv77 [185]
3 years ago
12

During which period did mammals first appear?

Biology
2 answers:
Anit [1.1K]3 years ago
7 0

Answer:

The correct answer is - d. Jurassic.

Explanation:

algol [13]3 years ago
3 0

Answer:

the Triassic Period

Explanation:

hope it helps

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Does kinetic energy have more energy in the solid state than in the liquid state?
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Liquids have more kinetic energy than solids

Explanation:

When a substance increases in temp, heat is being added, and its particles are gaining kinetic energy.

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Which state of matter has particles that slide past each other while remaining in contact?
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I haven't taken biology since my freshman year of high school, so this is kind of a guess. But I know for sure it isn't a solid. So I would go with a gas.
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Consider a hypothetical food chain consisting of grass, rabbits, and foxes. The primary productivity of the grass is 200 units.
STALIN [3.7K]

The maximum amount of energy that we should expect to be recycled from fox trophic level back to the grass trophic level is 0 units.

A food chain describes who eats whom in the wild. Every living thing – from unicellular algae to giant blue whales – needs food to survive. Every food chain is a possible pathway that energy and nutrients can travel through an ecosystem. The primary productivity of the grass is 200 units. There is a 10 fold decrease in the amount of energy units as we move upwards in production chain. So from grass to rabbits we lose energy. The foxes will only really have two units once it's decreased by 10 fold again. The grass does not get any energy from the decaying bodies of foxes, they get the minerals that they need to grow.  And so the correct answer to this question is 0 units because when the energy gets recycled from fox trophic level back to the grass trophic level it will be totally reduced.

Note: The question seems to be incomplete. So the complete question is "Consider a hypothetical food chain consisting of grass, rabbits, and foxes. The primary productivity of the grass is 200 units. What is the maximum amount of energy that we should expect to be recycled from the fox trophic level back to the grass trophic level? Answer choices: A) 0 units B) 0.2 units C) 2 units D) 20 units"

Learn more about food chain on:

brainly.com/question/16065961

#SPJ4

4 0
2 years ago
If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have
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Increased in pitch (frequency). It's the doppler effect.
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3 years ago
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