<span>Because the atmosphere is thinner, there would be less pressure keeping the heart at its current size and it would expand and become too large to work properly</span>
Dopamine (DOP) is the "pleasure" neurotransmitter involved in addiction and positive reinforcement.
The most specific would be felis catus. That is the name of the species in biology, and there are no more taxonomic divides after species.
The nucleus is the center of our cells. it contains our chromosomes and genetic information the produces life.
