What is a conservation effort that is being made by humans to benefit the land and oceans? A)Overusing resources
B)Dumping waste material into rivers
C)Beach renourishment projects to help restore sand
D)Mining activities that cause pollutants to enter the air

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables