Technician a says oily residue on hoses, components, or fittings indicates an area where refrigerant may be leaking. technician b says that low coolant level will result in the water pump only heating the engine, not the inside of the car. who is  correct?
neither technician a nor b
b. technican b
c. both technicians a and b
d. technician a

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.