Cyanobacteria are thought to have introduced oxygen into the early atmosphere. This was important because oxygen played a key role in

Which steps are involved in desalination of water? Check all that apply. Salt is removed from ocean water to provide fresh water? Water is heated until it evaporates? Water is considered and collected?

Animals that have been exposed to hazardous materials present no danger to people. a. true b. false

Compare and contrasts the starch cells found in plants with the fat cells found in animals. How are they similar?

Explain what happens as a puddle dries after a rainstorm

A) in order to learn how to fix a flat tire B) in order to choose a type of bicycle to buy C) in order to be entertained by an exciting story D) in order to learn why bicycle care is so important

You are working with a team of scientists who are investigating the biochemical control system involved in how animals digest fats in their meals.

A balanced polymorphism exist through disruptive selection in seed cracker finches from Cameroon in which small and large billed birds specialized in cracking soft and hard seeds, respectively.

True or false: if its phosphate groups were uncharged, atp would not be especially high in energy compared to adp a. True b. False

When an ecosystem ecologist looks at landscape full of interacting plants and animals, all kinds of questions about how ecosystems function come to mind, and they are not that easy to answer.

Which types of freely movable joints are often found in areas of the body such as the shoulders and hips needing movement in many directions? A. Pivot joints b. Hinge joints c. Ball and socket joints D. Saddle joints