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kumpel [21]
3 years ago
10

The total value of an ecosystem:

Biology
1 answer:
Fed [463]3 years ago
3 0

Answer:

Includes all of the values embodied by the ecosystem, including future uses and non-use values (such as cultural, symbolic, and aesthetic values) of an ecosystem.

Explanation:

Ecosystem may be defined as the constituent of the living and non living things present in the ecosystem. The living component includes the plants, animal and microorganisms. The non living component includes the water, air and soil.

The ecosystem provides oxygen and different gases important for sustain life. The ecosystem provides the aesthetic and cultural value that are used by future as well. Ecosystem provide medicine, food, furniture, fibers, habitat for the large number of organisms.

Thus, the correct answer is option (b).

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Answer:

outside of jupiter at sixth place

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DDT is an insecticide that was used extensively in the mid-1900s to kill mosquitoes. It was very effective at first, but after a
dlinn [17]

Insect populations can develop resistance to insecticides over time. The evolution of resistance is associated with an increase in the frequency of adaptive genes in the population.

  • In the case above described it is expected that a few mosquitoes in the population were resistant to DDT before it was ever used (Option a is correct).

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  • After exposure to DDT, those individuals in the mosquito population that didn't carry gene variants (i.e., alleles) associated with the resistance to this pesticide died.

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brainly.com/question/6389591?referrer=searchResults

8 0
3 years ago
The giant short-faced bear disappeared completely from North America about 12 million years ago due to competition from smaller
Olin [163]
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7 0
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Which of the following describes the embryonic period
dangina [55]

There should be options for this question. I manged to find them elsewhere. They are:

A) the period during which tremendous growth occurs and the organs continue to develop and become  functional

B) the period during which the umbilical cord develops

C) the period during which the major organs and structures of the organism first develop

D) the period during which the zygote moves down to the uterus and begins to implant in the lining

The correct answer is C. The embryonic period is the period during which the major organs and structures of the organism first develop. The embryonic period lasts from implantation of the egg in the uterus until about 8 weeks from the time of conception. It is the second major stage of prenatal development, prior to embryonic is the germinal stage and lastly is the fetal stage.

8 0
3 years ago
Which of the following is a accurate depiction of primary ecological succession?
Jlenok [28]

Answer:

This question lacks options, however, primary succession will be explained for detailed comprehension.

Explanation:

Ecological succession is the gradual series of changes that occurs in an ecosystem, charging it's structure and composition over time. It is of two types namely; primary and secondary successions.

Primary succession is characterized by the "LACK OF NO SOIL". It begins on a barren piece of land e.g rocks, with no form of life previously known to colonize the area. In primary succession, the barren land is first colonized by organisms such as lichens etc., which are collectively regarded to as PIONEER SPECIES.

7 0
2 years ago
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