70% of the World’s lithium is found in Chili. Chili has numerous volcanoes and significant earthquake activity year-round. Chili has deep oceanic trenches off its coastline where the oceanic crust is subducting under the continental crust. What type of tectonic plate boundary is Chili located on?

Which layer of the soil horizon is rich in organic material?

There are three ecosystem services; which are indicators of the health of an ecosystem and provided for by biodiversity. Which ecosystem service provides nutrient cycling, flood control and seed dispersal?

Burning fossil fuels releases sulfur and nitrogen oxide. These compounds react with the atmosphere to form

Cars have combustion engines which burn fossil fuels in a chemical reaction to produce carbon dioxide and water. Which reaction is this most similar to?

An isotope is an atom that has a different number of this subatomic particle in its nucleus making it unstable.

Which biogeochemical cycle is dependent of the work of bacteria?

What is the difference between the bottleneck effect and the founder effect?

There are three types of forest ecosystems. This forest ecosystem is characterized by low temperatures, low precipitation and coniferous evergreen trees.

Fossil fuels currently supply about _______  percent of all world commercial energy supplies.