Explain the difference between positive and negative feedback mechanisms and use examples that are easy to understand for non-biologists, such as valves releasing steam in a pipe, ovens pre-heating to certain temperatures, and so on.

What is the name of the two satelites on mars

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material