Necessary because it keeps heat in and keeps the planet at the right temperature for life.
It can harm the planet if more pollution occurs and the greenhouse gas effect traps too much heat and causes global warming
Reproductive isolation. Species refer to the group of organisms which share common morphological features and can interbreed and produce a viable offspring. Thus, the organisms of one species are reproductively isolated from the organisms of other species
<span>The correct answer is c. Rural communities were built based on the location of available resources. This means that places that had good land for crops or good climate had communities based around crops or tobacco, while comunities based around mining would be near mountains where mines could be found. Rural communities are usually based around some natural resource like a river or a mine or anything similar.</span>
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The Agricultural Revolution of the 18th century paved the way for the Industrial Revolution in Britain. New farming techniques and improved livestock breeding led to amplified food production. This allowed a spike in population and increased health. The new farming techniques also led to an enclosure movement.