Answer:
a vacine work by traning the immune system by reconize and combine either virus or bacteria.
Pacific Coast. As this area is in the bottom left and therefore has the highest hazard according to the key.
Answer:
Those that are able to acquire their food and shelter needs in order to survive and reproduce.
Explanation:
oxygen. 99% of your body is composed of oxygen, nitrogen, hydrogen, calcium. 85% of your body is composed with other elements. I hope that helps!!!
Answer:
That is a trochophore larva
Explanation: