What BEST describes the roles of photosystem I and photosystem II in the process of photosynthesis? A. They form ATP as hydrogen ions cross the thylakoid membrane. B. They absorb sunlight and distribute the energy as heat. C. They transfer electrons from a series of intermediates to form NADPH. D. They absorb sunlight and transfer the energy to electrons.

D. They absorb sunlight and transfer the energy to electrons.

Explanation:

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question