Answer:
Example of natural active immunity is fighting off cold and artifical active immunity is building up a resistance to a disease due to immunization and allergic reaction is an response to antigen resulting from active immunity
Answer:
B
Explanation:
These fish like to move from one body of water to another in search of food or a better living space
Answer:
im very sure the answer is C)Letter C because the emergence of a mature forest will resist changes to the ecosystem with the greatest success.
Explanation:
B.
Photosynthesis produces energy which is used during respiration to break down carbohydrates like starch into more usable forms like glucose
