Explain the three parts of the cell theory in your own words.

please & TYSM!!!

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

What is thought to have caused the mass extinction at the end of the cretaceous period?

Which units ate used to measure both velocity and speed? check all that apply