Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
The correct answer would be nuclear energy. The other answers would be fossil fuels because they are naturally made.
Answer:
Hmmm.....firstly it depends which grade ur in....well in general I am ready
Answer:
The phenomenon of unequal separation in meiosis is called nondisjunction. If nondisjunction causes a missing chromosome in a haploid gamete, the diploid zygote it forms with another gamete willcontain only one copy of that chromosome from the other parent, a condition known as monosomy.
Hope it helped
its a theory because its not a fact, its one idea along with other ideas.
