Which of the following is an example of kinetic energy
a. a girl running in a race
b. a tank containing gasoline
c. a car sitting motionless
d. a sled sitting at the top of a hill

The system breaks down the food we eat, while the system transports the tiny food particles to each cell in the body. a. muscular; circulatory b. digestive; respiratory c. circulatory; digestive d. digestive; circulatory

How do energy and matter move through an ecosystem? both energy and matter unidirectionally flow through an ecosystem. both energy and matter cycle within an ecosystem. matter unidirectionally flows through an ecosystem, whereas energy cycles within an ecosystem. energy unidirectionally flows through an ecosystem, whereas matter generally cycles within an ecosystem.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.