Scientists who studies wildlife in and around the great lakes area found their results to be disturbing. a large number of birds were born with partially developed eyes, crossed bills and webbed feet. what can infer is the reason?

Some key reasons for partially developed offspring:

• Genetic issues, parents sexual organs incorrectly formed, in turn malforming the offspring

• Pollution, parents consuming something they shouldn't have while the offspring was developing

• Breeding between relations; accidently mating with a brother or sister, in turn causing defects as many of the genes are the same

answer: c. two haploid cells

explanation:

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 : )