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

it is prolly d and c and f

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )