Both oysters and squid are mollusks why is an open circulatory system adequate for an oyster but not for a squid

How did the miller-urey experiment impact the way scientists think about the origins of life? use what you know about the miller-urey experiments to discuss the factors needed for life to arise, and speculate on whether life could arise on another planet.

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

What is turgor pressure, what causes it, and what does it do for a plant?