Zero degrees latitude is the line designating the Equator and divides the Earth into two equal hemispheres (north and south).
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Alloy is a mixture made up of iron &nickel.
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an aquatic ecosystem is an ecosystem in the body of water examples are marine ecosystem and fresh water ecosystem
Environmental parameters indicate whether or not resource use is harming the environment and this way monitoring environmental parameters affect policies regarding resource use. The correct option among all the options that are given in the question is the last option or option "d". By watching these indicators, it is possible to preserve the natural balance.
