The rod cells in the retina contain a light-absorbing pigment called
a. melanin.
b. melatonin
c. iodopsin.
d. rhodopsin

Darius is observing a family of geese, which includes a male goose, female goose, and several goslings. when a dog approaches the geese, the male goose hisses at the dog and flaps its wings threateningly. is the behavior of the male goose an example of an adaptation?

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above