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Karo-lina-s [1.5K]
3 years ago
9

In any ecosystem, ____________ are the point of entry for new energy.

Biology
2 answers:
melisa1 [442]3 years ago
4 0
I believe the answer is : D
Jet001 [13]3 years ago
3 0
In any ecosystem, producers are the point of entry for new energy.
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3 years ago
You are given a 1 liter bacterial culture in exponential stage of growth. The generation time of the bacteria is known to be 30
nydimaria [60]

Answer:

Option-A

Explanation:

A bacteria divides by binary fission which divides a parent bacteria into the two daughter cells and generation time refers to the average time difference between two consecutive generations.

The bacterial cell grows by the exponential function that is by 2^{number of generation} x initial population of bacteria.

In the given question,

<u>Initial population</u>

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So per liter, the bacterial population will be 2 x 10 ⁶

<u>Generation time</u>

1 generation time of bacteria is 30 min.

so 5 hours will have- <u> </u>\frac{300}{30}= 10 generations

<u>New bacterial population</u>

Using formula<u>  </u>2^{number of generation} x initial population of bacteria

2^{10} x (2 x 10⁶)

= 1048 x (2 x 10⁶)

2048 x 10⁶

Thus, Option-A is the correct answer.

4 0
3 years ago
Differential survival and reproduction of individuals in response to environmental pressure that leads to changes in allele freq
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Answer:

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This is the reason why natural selection is considered as a key mechanism of the evolution.

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Hydroelectric power produces electricity using?
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Water because hydro means water
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