2. Antigen
Toxins
3. Some bacterial infections
Viral
4. Innate immune system
5. Adaptive
6. Leukocytes
7. Humoral response
Cell mediated response
8. B cells
T cells
9. Helper T cell
Cytotoxic T cell
10. Antibody production.
Answer: The cell is the structural and functional unit of all living organisms, and is sometimes called <u>the "building block of life."</u> Some organisms, such as bacteria, are unicellular, consisting of a single cell.
Food chain is a sequence of living organisms that eat one another. The goal is energy and nutrition flow in the ecosystem from one organism to another.
From the given options, the following are food chain in the food:
<span>grass -> grasshopper -> snake -> hawk
It is a linear pathway. The hawk eats snake, the snake eats the grasshopper and the grasshopper eats grass.
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<span> It could be weight loss, decrease in muscle mass, changes in hair or skin, diarrhea, extreme fatigue, difficulty recovering from infection or injury, enlarged liver, edema, drop in blood cell number, and frequent colds.
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