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Strike441 [17]
3 years ago
9

Before scientists learned how to make artificial fertilizers, what key process limited the amount of nitrates available to plant

s in most ecosystems?
Biology
1 answer:
zavuch27 [327]3 years ago
6 0
I believe rottening would be the answer. Rotting, dead plants and animal feaces make great fertilizers. 
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During which stage of the cell cycle does the cell rest, grow, and copy DNA and organelles?
atroni [7]

The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells. In bacteria, which lack a cell nucleus, the cell cycle is divided into the B, C, and D periods. The B period extends from the end of cell division to the beginning of DNA replication.


7 0
3 years ago
What does it mean to say that cells are "specialized"?
Ratling [72]

Answer:

i think the answer is B

Explanation:

Specialized means they preform a specific task.

7 0
3 years ago
HELP ASAP
Gnom [1K]

Answer:

less than 1%

Explanation:

The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.

The earth is about 4.6 billion years and much of its history has been without the present of human activities.

  • Hominis were the first human to appear on the surface of the earth.
  • This was in the Miocene epoch which was about 6 million years ago.
  • Compared to the age of the earth, this time lapse is very small and not up to 1%.
  • Life first appeared on earth about 3.5billion years.
  • Since then evolution has taken its due course to give what we have today.
6 0
3 years ago
The Manx cat is in the domestic cat group, and the bobcat is in the lynx group. Both have a trait in common: short, stubby tails
Vanyuwa [196]

Answer: Both share common ancestry

Explanation:

Though both cats are of different groups, the presence of an ananatomical similarity - short, stubby tails - suggest strongly that they share a common ancestry i.e evolved from the same organism who had lived many years before, and possess short, stubby tails alongside other traits no longer shared by both bobcat and Manx cat

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There is a large population of rabbits that live on an island. The population consists of one species that has bright red fur. A
Viefleur [7K]

If they find them unattractive there's a probability they wouldn't mate because they are different species and genera

8 0
3 years ago
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