The bottleneck event that the cheetah went through in the last ice age ultimately resulted in a stronger, more robust species.

Why was the sample heated in step 5? describe the chemical principles involved in the reasoning behind this step?

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.