Atoms of which 3 elements could bond together to form an organic compound
a. carbon, hydrogen, and oxygen
b. oxygen, iron, and carbon
c. oxygen, hydrogen, and nitrogen
d. carbon, iron, nitrogen

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

Which structure in the cardiovascular system connect arteries to veins?

Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?