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joja [24]
2 years ago
12

When an internal or external stimulus disrupts homeostasis. Feedback mechanisms respond to

Biology
1 answer:
Murljashka [212]2 years ago
3 0
Answer: True

Hope it helps
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At one time, there were many more cheetahs than there are today. About 10,000 years ago, a change in
Ierofanga [76]

Answer:

<u>the bottleneck effect</u>

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Explanation:

Genetic drift has an important impact on the small populations. mutations, which are spontaneous heritable changes in the genetic code, made up of DNA. Here, mutations accumulate over time in a group, modifying the distribution of alleles or various forms of a gene. Natural selection may result in a loss of diversity in a population called genetic drift; one trait's allelic frequency rises while others become less prevalent. Typically such differences exist because of occurrences of mutation and recombination.

Some mutations or alleles may become extinct from the population.

<u />

Variants of a gene accumulate and are transmitted across generations; the frequencies of these occurrences are altered and become more stable in genetic drift- they become genetically distinct and may eventually form a new species after isolation. This may be further compounded through other  phenomena such as the founder effect where a group separates and genetic diversity decreases; and the bottleneck effect where barriers to reproduction or the die-off a population increases genetic drift.

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6 0
3 years ago
Lichens are composed of two organisms, a fungus
algol [13]

Answer:

B) ecological succession

Explanation:

The analogy given in this question describes ECOLOGICAL SUCCESSION, which is the series of changes that an ecosystem undergoes over a period of time. Ecological succession is of two types viz: Primary succession and Secondary succession.

Primary succession involves the series of changes that occurs on a new habitat that has never been previously colonized. This is the case of the colonization of bare rocks with no plant life by LICHENS. The action of the lichen, which involves secretion of acids that disintegrates the rocks into soil, paves way for the colonization of that area by new species.

Lichens, via the role they play in primary succession by helping alter a barren area into a fertile one that accommodates other organisms, makes them be regarded as PIONEERS of primary succession.

7 0
3 years ago
Auxins are plant hormones that coordinate several aspects of root growth and development. Indole-3-acetic acid (IAA) is an auxin
Softa [21]

Answer:

auxin

Explanation:

i am not that dumb i just over looked it

7 0
2 years ago
Which statement describes a political consequence of sustainable land use?
Sunny_sXe [5.5K]

The sustainable use of land means using the spare land in such an activity which supports the society and benefits the environment.

In such a situation if a land is found spare then a park should be constructed on it.

This will create an recreational activity spot for the society and they will be able to spend their leisure time with fun.

Also there will be less pollution and harm to environment will be lowered by greenery and trees in the park.

Learn more at brainly.com/question/24353052

5 0
3 years ago
Read 2 more answers
Which organelles allow plants to support heavy structures such as leaves and<br> flowers?
myrzilka [38]

Answer:

central vacuole

Explanation:

In many plant cells there is a single large central vacuole filled with liquid, pressure of the central vacuole allows plants to support heavy structures such as leaves and flowers. pro here here :D

7 0
2 years ago
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