Pollution occurs because:
a. the government has too many laws against pollution.
c. of pollution permits.
b. incentives to pollute exist.
d. factors of production are unlimited.

How does oxygen move from the respiratory system to the circulatory system? a. by pumping through the heart b. by circulating in an artery c. by moving across a synapse d. by diffusion across a capillary wall

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit