Which crosses occurs only in autotrophs

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

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

What is the ecological role of food chains and food webs