The oxygen we breathe is a waste product of the photosynthesis process.
true
false

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

Amap's orientation is typically determined by an

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the