When light energy excites electrons in photosystem ii, where do the electrons to replace them come from? . a) atp b) photosystem i c) the light energy d) split water molecules

Scientist have long study the earths climate by looking at which of the following? the earths orbit. the earths rock layers. the antarctic ice. the earths oceans.

How do adaptation affect a species?

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion