Arrow 2 represents that is taken up from the soil through the roots of the plant. A. hydrogen B. oxygen C. carbon dioxide D. water

What is the difference between an igneous, sedimentary and metamorphic rock

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

Explain why biological control methods are generally environmentally superior to chemical pest control methods.