If a scientist knows the relative age of a fossil, he can also know a. the relative age of the rock where it was found. b. how it became extinct. c. how long the organism was alive. d. the type of climate from which it came.

What’s the student’s scientific question

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

In one or two well-crafted paragraphs in your laboratory journal, summarize the process in which normal cells become cancer cells. your paragraph(s) must include each of the terms listed below. underline each term in your writing: