Answer the question immediately as it is important for my project. the motions of comets and asteroids in our solar system are predictable because they are 1)smaller than planets 2)nearly spherical in shape 3)in orbit around the sun 4)controlled by earth's gravity

I think its 3)in orbit around the sun

i hope i helped even just a little :)

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.