Answer:
IgM, IgA, IgE, IgD and IgG
Explanation:
IgM functions in the initial response to offence.
IgA is important for protection of mucus membranes such as in saliva, sweat, tears and gastric fluid.
IgE is active during allergic reactions and defense against infections.
IgD is found on the surface of lymphocytes and is activated upon contact with antigens.
IgG forms part of the secondary response to antigen and is also responsible for newborn protection.
Answer:
It decreases
Explanation:
The sun provides energy for plants to grow and then animals eat the plants and humans eat animals throughout the transfer of energy through digestion energy is lost via digestion and excretion.
B. To study the physical world.
This seems like a more reasonable answer then the other ones.
