Answer: An antigen
Explanation:
A molecule that evokes immune response in the body of an organism is known as antigen. These substance can be protein, carbohydrates, lipids when asked for chemical nature.
Physically these substance can be dust particles, smoke, pollen grains, some food particles. Antigen can be defined as the substance that tends to produce immune response by the immune system of the body.
Hence, the correct answer is option D
The body gets the needed mineral from the food we eat aka iron soduime and carbohydrates
I think it’s D i hope i’m right
A community is diverse species living together
An Ecosystem is all the living and nonliving factors that affect an organism
