Answer the following question given this paragraph: Virtually all animals have internal digestion of food. Animals consume other organisms and may use special tissues and organs to digest them. (Other heterotrophs, such as fungi, absorb nutrients directly from the environment. ). Q: What sort of digestion do animals engage in? Choices: - external - essential - poison - internal A:
internal

Answer the following question given this paragraph: Collision theory explains how materials can collide and become new materials. Q: Which theory explains how materials can collide and become new materials? Choices: - pileup theory - disturbance theory - rupture theory - collision theory A:
collision theory

Answer the following question given this paragraph: Q: What is the term for the basic contractile unit of the muscle? Choices: - filament - sphincter - bandimere - sarcomere A:
sarcomere