Imagine dr. evil came up with a plan to put a cover over the sun in order to block out the light from earth. how long would it be before a person on earth realized the light had been blocked? a) 8.3 seconds b) 8.3 minutes c) 8.3 days d) 8.3 years

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands