D....carbon can also form triple and quadruple bonds
Answer:
B
Mutation is the ultimate source of genetic variation, but mechanisms such as sexual reproduction and genetic drift contribute to it as well Because prokaryotes are haploid, such a mutation immediately become part of the genetic makeup of the cell unlike eukaryotic diploids where a normal second copy of the gene usually protects the cell from the potentially lethal effect of such a mutation.
The third level, secondary consumers.
Answer:
They're made of more than one cell
Explanation:
I think it’s loss of ozone layer
