Which of the following conditions is the most likely indicator of a population in an extinction vortex? a) the species in question is found only in small, stable pockets of its former range. b) the effective population size of the species falls below 1,000.c) genetic measurements indicate a loss of genetic variation over time. d) the population is permanently small.

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