Which of the following statements about antibodies is correct?
a. antibodies are polypeptides.
b. antibodies are produced by the bone marrow.
c. antibodies are pathogenic foreign substances.
d. antibodies kill bacteria but not viruses.

According to the cladogram, which organisms have roundworms as a common ancestor?

The response is the basis for vaccination. primary secondary tertiary none of the above

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.