Form the union for the following sets. R = {10, 15, 20}

S = {20, 25}

R ∪ S =

{10, 15, 20, 25}
{20}
{ }
{10, 15, 25}

Eastern europe and parts of northern europe have which of the following climates?

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.

How did the lab activities you answer the lesson question: what effect does plate movement have on geologic events and structures at earth’s surface? what did you learn from conducting this lab?