A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
The answer to number 2 would be as the number of carbon carbon 2ble 2ble bonds increase, the melting point decreases
How a bridge is built at the base can affect how far it can extend.
There are several mutations that benefit the organism.A well known example is the antibiotic resistance developed by bacteria, which aid in their survival even when they are exposed to a given antibiotic. A single gene mutation in wild almond trees resulted in a variety that no longer synthesizes amygdalin.
