Why do macromolecules differ in the amount of energy they contain?

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Which description provides the best objective summary of the article in the passage?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?