Answer:
a karyotype
Explanation:
A karyotype allows you to see and count a organism's chromosomes to make sure there are no abnormalities.
Answer:
the reaction to carbon dioxide and water to produce sugar, as well as oxygen.
Answer:
Blood moves through many tubes called arteries and veins, which together are called blood vessels. The blood vessels that carry blood away from the heart are called arteries. The ones that carry blood back to the heart are called veins.
Evolution. over time animals have evolved unique traits that make them distinct from other species.
Answer:
A solution to both problems is to have some sort of body cavity, called a coelom, in which the body organs lie bathed in body fluid. Movement of the body wall would not squeeze the organs, organs could grow without being pressed by the body wall, and diffusion of nutrients and wastes would be easier.