Which two European countries controlled most of Africa South of the Sahara in 1914? a France and Great Britain
b. Germany and Portugal
C. Germany and France
d. Great Britain and Portugal
e.
France and Portugal

Explain why components that are naturally found in air can be considered air pollutants.

Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire