The are found deep in the diaphyses of long bones and are filled with yellow marrow in the adult.

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

2points what do bacteria have in common with the cells of other living organisms?