The original source of all genetic variation is <span>mutation.</span>
Answer: Normal microbiota consume nutrients.
Explanation:
They don't consume nutrients,if it was so, then they would cause harm rather good to the body cell
One of the direct consequences of a decrease in natural habitat is a decrease in biodiversity. Option C.
<h3>What is biodiversity?</h3>
Biodiversity refers to biological diversity. It is the totality of various species of plants, animals, and microbes present in a particular area.
Plants, animals, and microbes occupy different parts of the ecosystem as their homes. They could be found virtually everywhere but more diversity tends to be present in forests.
Forests hold a large chunk of the world's biodiversity. Thus, when an increase in the population of humans leads to the clearing of the forest for construction purposes, millions of habitats are being destroyed apart from the vegetation that is removed.
Apart from deforestation, pressure also mounts on the remaining biodiversity because of the services they provide to humans. Hence, all these lead to a decrease in biodiversity.
More on biodiversity can be found here: brainly.com/question/13073382
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The common cuckoo does not make a nest of its own, and they do not bring up their own young. Instead, the female lays her eggs in the nests of other birds. Each female cuckoo specialises in just one host species, and lays camouflaged eggs in that bird's nest.
Sun, wind, ocean waves, tides and geothermal heat