Which of these animals are vertebrates? (choose all that apply.) penguin
a. fox
b. snake
c. alligator
d. kangaroo
e.

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases

Ascientific idea becomes valid when it is what?

In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%