The oceanic crust is composed mainly of rocks that are rich in a. sulfate minerals b. carbonate minerals c. phosphate and oxide minerals d. silicates and magnesium minerals

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

What does it mean for a cell membrane to be selectively permable

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used