4.010
Mutations can be caused by
a. radiation
b. chemicals
C. both a and b

Acommon kind of mechanical weathering is called

During convection, less dense fluid rises and denser fluid sinks.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.