In some areas of africa the soil quality is very poor, and there is a food shortage how would technology most likely be useful for this region
a. producing crops that grow in poor conditions
b. development of transportation
c. purifying drinking water
d. caring for aged population

Chicken pox and hepatitis are bacterial diseases. true or false?

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

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes