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

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m