1. what is meant by "survival of the fittest? "

2. is a wooden fence post a living thing? why or why not?

3. is the trunk on a tree a living thing? why or why not?

1. Survival fitness is the existence of organisms that are best adapted to their environment, with the extinction of others.

2.  A wooden fence is not considered a living thing. It might have living things growing ON it, but it's not living. It was once a living thing yes, but now, no.

3. The trunk on a tree is definitely a living thing. It's part of the tree after all.

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.