The answer is human activity. <span>The cause of changes comes from human activities, which, not
like natural damage, are relentless and exhaustive. Although most of this
deforestation is compelled by national and international economic forces, a major
proportion serves no long-term purpose; it results from sustenance activities
on a local level. Many of the effects from human-induced annihilation of the
rainforests are probably permanent within our time. The part of humans in the
deforestation of the world's forests is significant and extensive. Many
activities contribute to this loss as well as sustenance activities, logging, oil
extraction, fires, mining, war, commercial agriculture, cattle ranching,
hydroelectric projects, pollution, hunting and poaching, the collection of fuel
wood and building material, and road construction.</span>
A brass aerophone is a musical instrument that produces sound by sympathetic vibration of air in a tubular resonator in sympathy with the vibration of the player's lips
B; As far as the relation between humans and the environment, it is obvious how much they relied on it. Not only as a food source, but for economic growth and sustainability as well. The other answers make valid points but in the context of this question, the only one that even mentions the relation is B.
