Which of the following is not a benefit of biodiversity?

a) greater variety of food sources
b) aesthetic or personal enjoyment
c) sources of new products
d) simpler classification schemes

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