Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.
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If it's two different kinds of birds it's called competition.
Answer:
the answer youre looking for is A.
(every object located in the universe emits radiation)
Answer:Plants absorb sunlight and turn that energy into food once put together the process is known as photosynthesis.
Explanation: