A certain atom has an atomic number of four. how many protons does it have?

a. 0b. 4c. 8d. 2

Short Answer 4. What role do marine laboratories play in the field of marine science?

The instructor of the pre-nursing physiology class is explaining respiration to the class. What does the instructor explain is the main function of respiration?

What did miller an ureys experiment provide evidence for

A coyote chases a jackrabbit. Which process gives the coyote the energy it needs to chase the jackrabbit?

What does the first word in a two word name of an organism identify

Reform movements of the 1800's was most likely influenced by what event in Europe? A. Governments were slow to act. B. Populations were increasing rapidly. C. Revolutions were spreading across Europe. D.

What's the definition of chemical energy

Once pathogens have penetrated the non-specific barriers, they are confronted by macrophages and natural killer cells. how do these cells contribute to maintaining homeostasis?

What happens when a plate carrying oceanic crust collides with a plate carrying continental crust?

What carbohydrates humans can't digest?