The answer would be C.
Plants that live in the canopy get way more sunlight than the ones that are on the forest floor. They have different adaptions that i can tell u about in the comments if it’ll help with what ur studying:)
There is a 3/4 chance their offspring will be black. If you make a Punnett's (I hope that's how you spell it) square then you will find that one offspring will be homozygous for black hair, two will be heterozygous with black hair, and one will be homozygous with brown hair. Therefore, there's a 3/4 chance the offspring will have black hair. Hope this helped!
Nuclear reactors use hydrogen and they are an up and coming energy source.
There are also hydrogen fuel cells.
Animal cells don't have mitochondria and have smaller vacuoles than plant cells <span />