The medullary cavity in the long bone of an adult is primarily filled with bone marrow.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

In the united states there are many types of rabbits. four different species have four different ranges or habitats. in which range would developing white fur in winter most likely not be an advantage?

Satellites orbit earth in the a) mesosphere b) troposphere c) stratosphere d) thermosphere