Organisms that utilize inorganic molecules (such as hydrogen sulfide), carbon dioxide and water to form organic molecules in the absence of sunlight are called a. heterotrophs b. chemoautotrophs c. autotrophs d. photoautotrophs

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