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liubo4ka [24]
3 years ago
6

Which observations did Darwin make?

Biology
1 answer:
12345 [234]3 years ago
7 0

Answer:

Heritable variations exist in each population.

Each species seems suited for its particular environment.

A population has more individuals than can be supported by the environment.

Explanation:

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The birth rate (sometimes called the crude birth rate) is the ratio of the annual number of births to the average total population for that year. When the population grows, the contact between people will be more permanent, and it will increase the marriage rate, and thus the birth rate. Age structure:The age structure is a mode of graphical representation of the structure (of age as well as of sex) of a population which constitutes a synthetic image of the past, present and future of the population.When a population resides for a long time in the same place (in favorable conditions, not raising the death rate and without moving), this will vary the age structure by observing an increase in the elderly population.

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(science) Give at least one example of each of the following
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