3. Paragraph 4 discusses one of Earth's system feedbacks. The feedback affected ocean currents during the last glacial period. Which system feedback was this?
A. The amount of CO2 in ice cores
B. The formation and destruction of land bridges
C. The amount of CO, stored in deep oceans
D. None of the above

solvent

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pls mark as brainliest

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.