Explain the concept of social Darwinism. How did this idea encourage European settlers to treat native Africans differently?

Which statements about wells are true? check all that apply. a) wells bring groundwater from the unsaturated zone to the surface of the water. b) wells need to be drilled below the water table. c) if water is pumped from a well too quicky, the well may run dry. d) water from wells is generally not safe to drink. e) water gushes from artesian wells due to pressure.

Russia is to the east if germany ? true or false

What is the amount of organic matter in all living organisms in a habitat called?