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lyudmila [28]
3 years ago
7

Which important event occurs in the second trimester? (1 point)

Biology
1 answer:
frez [133]3 years ago
8 0

Answer:

C. The heartbeat of the developing human can be heard via stethoscope.

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Thermohaline circulation is influenced by changes in density gradients. These density gradients are affected by the salinity and temperature of the ocean’s water. Cold water is denser than warm water and salt water is denser than freshwater. As water cools off, it sinks. As water evaporates, the salt concentration of the remaining water increases because the salt from the evaporated water remains. This causes the water to sink and circulate.

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