A boxer has been jumping rope for an hour. His leg muscles are burning, and he feels weak. Which substance is the most likely cause of the burning he feels in his muscles?

Where would you expect the ocean water to be less dense? Oregon Saudi Arabia Southern tip of Chile Antarctica

Which homeostatic process is characterized by the diffusion of water molecules? A. active transport B. osmosis C. passive transport D. dynamic equilibrium

Which is a vey slow, naturally occurring environmental change? A. volcanic eruption B. climate change C. wetland degradation D. pollution

Which of the following statements about an organism's habitat is not true?

If you were shipping green bananas to a supermarket thousands of miles away, which of the following chemicals would you want to eliminate from the plants' environment? a) cytokinins b) CO2 c) auxin d) ethylene.

What type of animal do most scientists believe are the ancestors of the modern day whale

How is blood routed through the small intestine? which class of nutrients enters the body via blood?

Alpine Marmots are a type of rodent that have the ability to decrease their body activity to conserve food. These marmots most likely hibernate during the cold winter months. build fires on cold winter nights.

Do fly's eat anything?

Examples of temporary change