Which of the following can be defined as the amount of matter contained in an object?
a. mass
b. weight
c. density
d. volume

Greg goes to a high school and observes the way students talk to each other. he makes notes on the words used, the atmosphere of the school and the way the students present themselves to each other. this is an example of a( research method.

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?

In the construction of a new housing development which factor of production can be categorized as land?