The correct answer would be D. This is because ecology is <span>the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.</span>
Answer:
C
Explanation:
Becuase fom a vaccine you are recieving antibodies by another animal or human donor.
D is unlinkely since it describes how the mother is nursing the baby, so nothing directly mentioning of the baby recieving any antibodies. The other options also talk about how the body creates its own antibodies, which isn't passive immunity.
I think the answer is B the Lymphatic system because <span>The substance, which is produced in the liver, flows into the small intestine, where it breaks down fats. Nutrients are then absorbed through the wall of the small intestine. Upon absorption, the </span>fat-soluble vitamins<span> enter the lymph vessels before making their way into the bloodstream.</span>
<span>Leptin, a hormone predominantly made by adipose cells that helps to regulate energy balance by inhibiting hunger, is the hormone secreted into the bloodstream by fatty tissue to signal the hypothalamus that the body has enough food.</span>