Your teacher has given you the assignment to deliver a 7-10 minute speech about gun control laws to your classmates. begin
your preparation by narrowing your topic and deciding on a purpose (i. e. to persuade or to inform), then write a specific thesis
statement for your speech.

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle

Whats the biggest sea in the world?