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jeka94
4 years ago
6

PLEASE HELP ASAP IM TIMED!! 100 PTS WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST AND CORRECTLY

Biology
1 answer:
cestrela7 [59]4 years ago
8 0

Answer: More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant. At least a handful of times in the last 500 million years, 75 to more than 90 percent of all species on Earth have disappeared in a geological blink of an eye in catastrophes we call mass extinctions.

Though mass extinctions are deadly events, they open up the planet for new forms of life to emerge. The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and birds to rapidly diversify

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Tại sao chúng ta lại bị trụt rút
cestrela7 [59]

Khi bạn quỳ lâu, đứng lâu sẽ gây ép lên các cơ bắp và mạch máu. Hoặc một tình trạng khác là khi ngủ bạn thường xuyên để cong chân, cơ bắp ở bắp chân khá ngắn, không được duỗi ra, duy trì tư thế này lâu, khi cử động nhẹ bạn sẽ bị chuột rút.

3 0
3 years ago
The ecosystem is the lowest level of the biosphere hierarchy to include _______..
netineya [11]
<span>The ecosystem is the lowest level of the biosphere hierarchy to include weather patterns and soil conditions. in the whole biosphere hierarchy, ecosystem actually placed as the second highest (1 place below biosphere) But there are only 2 hierarchy that include weather and soils, and those hierarchies are biosphere and ecosystem. So technically the ecosystem will be the lowest in this matter</span>
8 0
3 years ago
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Why would a drug the damages capsids help treat a viral infection
goblinko [34]
Because by damaging capsids, there is no place for the bad DNA to be stored. So the drug destroys the DNA so no more of the virus can be stored in the body.
8 0
3 years ago
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Mammals whose young develop in a pouch on the mother's body are called
DaniilM [7]
The correct answer is: marsupials.

Marsupials are actually defined by their ability to hold the young in the pouches, where they can be well protected. Some examples are Kangaroos and Koalas.


Other answers are wrong: for example, gymnosperms are plants, not animals.

4 0
3 years ago
How do viruses reproduce?
Naddika [18.5K]

Answer:

c. By infecting living cells

Explanation:

c. By infecting living cells

6 0
3 years ago
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