In the United States, the most widespread cause of species extinction is which of the following? overhunting habitat loss poisoning overfishing

Which is an example of muscles working against each other to contract and extend? A. biceps and triceps B. latissimus dorsi and biceps C. trapezius and quadriceps D. hamstring and trapezius

What's the difference between an animal cell and a plant cell?

Which system would be responsible for moving the body so you can wave to a friend? a) circulatory b) digestive eliminate c) excretory d) muscular?

A pump is not used to raise groundwater to the surface in areas where artesian wells are located because the water in artesian wells is

What indicates to a muscle that it should contract

Kidney dialysis relies on diffusion of various dissolved waste molecules (solutes) across a non-living semipermeable membrane.

Organelles at which amino acids are hooked together to make proteins

What is the basic unit of structure and function in all living things?

What role did social media play in the outbreak? Contagion movie

Identify which statement is NOT correct about the eyes of mammals. A) Mammals have two eyelids, one upper and one lower eyelid. B) Mammal eyes have a lens which serves to focus the light.