Earth is a closed system. That means the amount of rocks, metals, carbon, nitrogen, oxygen, and water on Earth . So, it is essential that biogeochemical cycles these materials as they move through Earth's subsystems.

List 3 ways people were targeted by the nazis.

Germany's black forest is being destroyed as a result of which environmental issue ?

Which best describes california population when it became a state in 1850? a. because of the gold rush attracting settlers all over the world california population diverse. bcalifornia had banned foreign immigrants at the start of the gold rush. so, the states population was made up of entirely of americans from other parts of the country. c california had a large african population because many southern planters had moved their enslaved africans to start large farms. d the indian removal act had led to the relocation of thousands of eastern native americans to california. as, a result the majority of californias population was native american