I think the answer is. A.good conductors of thermal energy.
A. Kidney
It is one of the major organs
Changes in the dna are called mutations. They can occur spontaneously. Mutations can only be passed down in gametes--sperm and egg cells. with Darwins theory at mind a mutation needs to pass the test of natural selection to remain in the gene pool. So purposly making mutation or altercations may end in diseases/illnesses or in some cases death because they body can not take it.....hope this helps if it doesnt im sorry!
The answer is the occipital lobe of the brain
Warm water with no salt is the least dense
