Ants and aphids often live near each other. the ants feed on the wastes produced by the aphids, and the aphids are protected from predators by the presence of the ants. what type of relationship is this? a. mutualism b. parasitism c. commensalism d. detrivism

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars