Answer:
They excrete pheremones that notify the colony of a situaiton.
Explanation:
A.) Veins in the pulmonary circuit carry oxygen-rich blood
red blood cells are used to circulate oxygen through out the body, thus it is true.
Blood, flowers, bacteria, and skin
Answer:
Explanation:
the baby is not theirs because the father has a blood type of OB so he can give an O or a B and the mother has a blood type AB so she can give either an A or a B so their child could either be of blood type A or B or AB but not O
Animal cells contain dna enclosed in the nucleus
