Which bases pair together inside a dna molecule

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

If animal agriculture was eliminated, how much grain would become available for human consumption?