Which is not used to classify organisms?

a. ancestry

b. habitat

c. age of the organism

d. dichotomous key

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

What are the possible blood types among the children of parents that are ab and ii? oa) types a and b ob) types a, b, and ab c) types a, b, and o od) types a, b, ab, and o

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation