Which pair of events would directly result in a constant number of chromosomes in body cells from one generation to the next in sexually reproducing species?

Meiosis and fertilization

Explanation:

The type of cell division that takes place in the sexually reproducing cells in meiosis.

Meiosis is the type of cell division which maintains the ploidy level in the new organism by forming cells with haploid or half the number of chromosomes.

The meiosis produces 4 haploid gamete cells which when fuses or fertilise with the gamete cell of the opposite sex again form a diploid organism. This type of cell division maintains a constant number of chromosomes.

Thus, meiosis and fertilisation are correct.

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the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.