<span>The three sources of signals related to the regulation of cell growth and division are :
</span><span>a) Other Cells
b) Other Organs
c) Environmental Conditions</span>
The atomic number of an element is the number of protons in the nucleus of an atom of that element.
Atoms with the same number of protons, but a different number of neutrons are called isotopes.
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Populations are made up of all the members of a species living in the same place at the same time. A community includes all the populations of the area. The community and the abiotic factors make up the ecosystem. An organism lives in its habitat within a community.
Explanation:
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Explanation:
They can adapte to fresh water but they can also look for the salt i think
They can BE used as Treatments ,they can be used for Natural Gas, and they can be used in Oil
Hope It helped :D