Answer the following question given this paragraph: Birds reproduce sexually and have internal fertilization. Mating is generally preceded by courtship. Their amniotic eggs have hard shells and are laid in a nest. The eggs are usually incubated until they hatch. Most species have a relatively long period of parental care. Q: What kind of fertilization do birds have? A:

Options are: [+] deep fertilization [+] asexual [+] sensitive fertilization [+] internal fertilization
Answer:
internal fertilization