A dependent variable is: A. Changed to test a hypothesis.
B. Measured to show the effect of a change.
C. Kep the same to make an experiment a fair test.
C
D. Collected to draw conclusions.

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime

All phases of matter may have a fixed mass