Although energy is conserved overall in universe, plants use sunlight to make food, herbivores eat plants, and predators eat other herbivores, energy is not transferred efficiently, and some is lost on its way up the tropic levels. true or false

Match the types of competition to their descriptions

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h, o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Describe two recent or ongoing space missions.