Which of the following is not an effect of deforestation?

a. poor soil quality
b. poor air quality
c. destruction of habitat
d. increased food supply

What is work? how much work is done to move an object 0 meters?

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

If frequency goes down, what happens to wavelength? does it get shorter or longer?