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Pepsi [2]
3 years ago
10

Weeds can harm crops by serving as a home for diseases and insects. True or false

Biology
1 answer:
Alekssandra [29.7K]3 years ago
4 0

Answer:

I think true

Explanation:

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How do humans interfere in the carbon cycle?
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Humans burn fossil fuels, clear trees, change land use, creating smog that traps the carbon in the Earth's atmosphere, leading the oceans to absorb the heat and eventually end up with global warming and ocean acidification.

Explanation:

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3 years ago
A protein kinase can phosphorylate an enzyme and activate it by
Zinaida [17]

Answer:

Signal transduction

Explanation:

A signal molecule binds to a receptor.

A conformational change in the signal-receptor complex activates an enzyme.

Second messenger molecules are released.

Protein kinases are activated.

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3 years ago
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Answer:

3. extreme

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7 0
3 years ago
The Precambrian eon is separated from the Phanerozoic eon in the fossil record because of
Usimov [2.4K]

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Explanation:

Precambrian eon is the initial existence on earth that can be predicted by the study of rocks and remaining of fossils. It has been seen as the existence of skeleton in this era, before this era no such things has been observed, even the development of sexual reproduction.

The Phanerozoic era comes after the Precambrian era, more advanced kinds of fossils of animals had been observed in this era.  Phanerozoic era period of life on earth. Large organisms sudden appearance are seen in the Phanerozoic era i.e. First dinosaurs, mammals, fishes, angiosperms,first vertebrates etc.

5 0
3 years ago
100 POINTS!!!!
Xelga [282]

Answer:

Explanation:

I hope this drawing helps

I cant right the paragraph rn but I can right it in like a hour

3 0
3 years ago
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