Recently in canada, scientists discovered evidence of a prehistoric wildfire they believe occurred when dinosaurs roamed earth. the fossils they discovered were used to study how forests looked before and after this fire. in addition to this comparison, what important information is revealed by these fossils?

Anton created a chart listing different types of materials. which best complete the chart?

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

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.