2. The marine iguanas of the Galápagos Islands that live in salt water, feed on seaweed and algae. Marine iguanas have flattened tails while other
species of iguanas that live on land on the Galápagos islands, and on the
South American mainland have rounded tails. Which of the following best
explains this difference in tail shape?

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