Leeches are members of the phylum in the clade of bilaterally symmetric animals called

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

What are some characteristics of a free enterprise economy?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing