Earth's layers can be organized based on composition and physical properties. Describe what each of these categorizations mean.

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

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:

A(n) is a molecule influences the way that a molecule reacts.