Aspectrograph is used to:

a. "see" radio waves
b. measure distance
c. photograph the light spectrum
d. analyze infrared and ultraviolet rays

Which kind of organism is a heterotroph?

The president of american systems announces that all employees will be going on a trip to san francisco. some employees like the idea and some don't. according to the component of attitudes, these evaluations reflect the feelings of the employees.

What was the name of the theory that said that if one country in a region fell to communism, others would surely follow? 1) domino theory 2) arms race 3) brinkmanship 4) containment theory