Blood is a fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated by the heart through the vertebrate vascular system, carrying oxygen and nutrients to and waste materials away from all body tissues.
a male and female gamete will merge together to form a new organism. The two haploid cells will fuse together to form a diploid cell called a zygote.
Observing a specific or general object, or subject.
