About how much energy is transferred from a primary consumer to a sencondary consumer
a. 90% energy from sun
b. 10% energy from sun
c. 10% primary energy
d. 1% primary energy

About how much energy is transferred from a primary consumer to a sencondary consumer  

a. 90% energy from sun

b. 10% energy from sun

c. 10% primary energy

d. 1% primary energy

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