Select the correct answer. Sam is a rancher who owns a herd of cows. How will he be able to identify the effects of toxicity in the herd?
ОА.
if one cow becomes ill
OB.
if he finds locoweed growing in the pasture
OC. if a number of cows become ill
OD.
if the cows are making a noise
O E. if the cows are grazing in one corner of the pasture