Which factor is most likely to have contributed to the high fertility rate in africa A lack of access to food
B Many economic opportunities
C high rate of education
D poor access to medical care

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.