Answer: :)
Explanation:
Complex organisms have specialized tissues, such as nerves, organs or flowers. In contrast, simple organisms, such as amoeba or yeast, exist as a single cell. Larger organisms tend to have more specialized cells that smaller ones. Some single cell organisms bind together to form a colony.
Answer:
Lymph nodes become swollen in response to illness, infection, or stress.
Explanation:
Swollen lymph nodes are one sign that your lymphatic system is working to rid your body of the responsible agents.
I think it would be A. natural selection