Amebas are single-celled organisms that need to obtain food in order to *

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.

If a keystone species is removed from an ecosystem

How does the structure of dna hold the information needed to code for the many features of multicellular organisms?