Which of the following best describes how friction affects motion? A
Friction makes motion between two touching surfaces much easier.
Sliding friction makes running on a windy day much harder on your body.
-АВ
Rolling friction makes moving through liquids feel like very hard work.
D
Friction makes motion between two touching surfaces more difficult.

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?

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:

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.