Which statement best describes a scientific question? it must be based on a hypothesis. it must be supported by data. it must be testable. it must be original.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

You want to cultivate some exotic plants at your farm. however, the climate is chillier than the temperature range favorable to the crop. which is the best method to use for the cultivation of this exotic crop? a. use a crop rotation method b. use a lot of fertilizer c. prepare the seed bed properly d. use a greenhouse e. use irrigation

How are fossils used to date organisms?