The open ocean is among the least productive ecosystems on earth. however, it contributes greatly to the overall productivity of the biosphere. how can you explain this

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;