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vodka [1.7K]
2 years ago
15

WILL GIVE BRAINLIEST, 50 POINTS!!!

Biology
1 answer:
statuscvo [17]2 years ago
6 0

Answer:

B

Explanation:

The Earth is tilted 23.5 degrees on its vertical axis. During the northern hemisphere's spring and summer, the northern hemisphere is tilted towards the Sun.

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Specific chemicals are bound by carrier proteins and transferred on one side of the membrane. The conformational changes they go through next enable the molecule to cross the membrane and exit on the other side.

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