Transport of materials into a cell against a concentration gradient, from low to high, requires a) water. b) energy. c) osmosis. d) a passageway.

b) energy

Explanation:

To survive, cells require many substances to be at higher concentrations inside the cell than outside of it. This is known as active transport and requires cell energy.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

mark as brainlest

gokuson

a

explanation: