Under which conditions do most types of cells function at optimal levels? A.
over a wide range of temperatures and pHs
B.
at any temperature and pH
C.
within a narrow range of temperature and pH
D.
in rapidly changing temperatures and pHs

the answer is c within a narrow range of temp and ph

materials water oxygen those are the things i can think of in this moment.

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.