Using the photographs of the four rock samples on the course website, order the samples from youngest (1) to oldest (4). Rock sample 1 (10b-1); rock sample 2 (10b-2); rock sample 3 (10b-3); rock sample 4 (10b-4). a. 10b-1
b. 10b-2
c. 10b-3
d. 10b-4

Ozone in the upper atmosphere has been depleted by a. sulfur dioxide. b. chlorofluorocarbons. c. carbon dioxide. d. oxygen.

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone, pumice, and gneiss.

What is one difference between austria and switzerland? a. austria is landlocked. b. austria has more minerals resources c. austria has a strong tourism industry d. austria has a strong dairy cattle industry