All the following are commonly used in agriculture and pollute the soil EXCEPT O A.
Erosion.
OB.
Herbicides.
O C.
Fertilizer.
OD
Pesticides.

Although there are a limited number of amino acids many different types of proteins exist because..

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Abnormal softening of a gland is known as