An antigen
a. is a foreign molecule that evokes a specific response by a lymphocyte
b. is a protein attacked by an invading microorganism
c. induces development of white blood cells in the bone marrow could be an invading bacterium
d. is a protein molecule that defend the body against disease

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

Which level of consumer had access to the smallest apply of energy