In 3–5 sentences, compare and contrast the flow of matter and energy in each trophic level for land-based ecosystems and marine ecosystems. How and why are they similar, and how and why are they different?

idk and i also need to know where are those bio brainy acts lol

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