Without further context I would assume the answer here is: Hydroxyl groups.
<em>An ever-growing demand for resources by a growing population</em> is putting tremendous pressures on our planet's biodiversity and is threatening our future security, health and well-being, reveals the 2012 edition of WWF's Living Planet Report – the leading biennial survey of the Earth's health.
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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Answer:
The binding of acetylcholine to its receptor activates the muscle and causes a muscle contraction. In myasthenia gravis, antibodies (immune proteins produced by the body's immune system) block, alter, or destroy the receptors for acetylcholine at the neuromuscular junction, which prevents the muscle from contracting
