Which of the following is an example of biological control? a.
using chemicals that kill pests.
b.
using organic fertilizers.
c.
using a natural predator that kills pests.
d.
none of the above.

Which is not true about oxygen-17 and oxygen-18?

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0