A food chain is a linear representation of the energy going through organisms while a food web shows multiple connections between the organisms.
An example for X-linked recessive disorder is (C). Color Blindness
Answer:
The synchronous orbit appears to make the moon more vulnerable to meteor strikes
Perhaps the answer your looking for is, a tumor suppressor gene.
The answer will be haptens because haptens has the ability of combining to carriers that are large enough to produce antibodies. The large carriers are usually the proteins that binds to it after producing antibodies. The antibodies, ions and reagins does not comply in the question above for antibodies focus more in the immunization. The ions are the electrons that produce positive or negative electric charge and the reagins are the ones responsible in allergic reactions.