What type of model would be most useful when trying to determine the flow of energy in a marine ecosystem? a model that connects the higher trophic levels with the ones below them a model that determines the overall abundance of energy available in each organism a model that predicts how different organisms will behave around each other a model that shows all of the organisms living within the ecosystem

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

Match each description of an object’s motion with the position-time graph that represents it. not moving moving with constant speed speeding up slowing down

The effect of a hormone on a target cell may be decreased by the presence of