Which of the following methods of improving air quality does not require advanced technology? a.
exhaust scrubbing
b.
conservation
c.
using renewable energy sources
d.
driving fuel-efficient cars

Please select the best answer from the choices provided

A
B
C
D

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

Which law represents a balanced chemical equation?

Which type of transport is responsible for oxygen entering into blood cells? a. vesicle b.passive c. facilitated d.active b.passive