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kari74 [83]
3 years ago
14

Iv u answer this ? youll get points

Biology
2 answers:
zvonat [6]3 years ago
6 0
A. Covalent bonds tend to hold them together
Pachacha [2.7K]3 years ago
3 0

the answer is A. covalent bonds

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Answer: C

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One natural cause of extinction would be the massive __________ that occurred in the 1800s.
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)What type of questions cannot be solved by scientific methods?
lana [24]
Hi!

Questions that we cannot answer with science are going to be ones which are subjective, or, opinion related.

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8 0
3 years ago
A biology student caught and tagged 50 trout in a small lake. After two weeks, the student caught another 40 trout and found tha
Vlad1618 [11]

The best estimate of the population of trout in the lake is 500 individuals.

The low number of tagged trout recaptured may be because the tags slipped off.

This possibility can be reduced if the student used tags that does not slip off easily.

<h3>Mark and recapture method</h3>

The formula for calculating the estimated number of individuals in the population is given as:

  • N = (M*C) / R

where:

  • N = estimated Number of individuals in the population
  • M = number of individuals captured and Marked
  • C = total number Captured the second time (with and without a mark)
  • R= number of individuals Recaptured (those with a mark)

Calculating the estimate trout population:

N = (50*40)/4

N = 50

Therefore, the best estimate of the population of trout in the lake is 500 individuals.

The low number of tagged trout recaptured may be because the tags slipped off.

This possibility can be reduced if the student used tags that does not slip off easily.

Learn more about mark and recapture method at: brainly.com/question/10646744

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2 years ago
What is the difference between the cerebral cortex of an adult and that of an adolescent?
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Answer: the part of the brain that does decision making is different because adolescents arent fully grown

Explanation:

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3 years ago
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