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koban [17]
4 years ago
6

What happens during the first trimester? Its asking what happens during the first three months in the womb.

Biology
2 answers:
kkurt [141]4 years ago
5 0
D would be my answer. hope that helps

sweet [91]4 years ago
4 0

Answer:

The major organ systems have started developing.

Explanation:

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Formation of these layers is due to the sinking of the cold water in the basin which and ice formation which leaves the salt in the seawater ,therefore, increasing salinity. This increased salinity increases its density and the surface water is replaced by the sinking water causing deep ocean currents.

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