Which of the following pathways is the largest of the circulatory system?
a. systemic circulation
b. pulmonary circulation
c. lymphatic circulation
d. coronary circulation

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

Moving down the ramp from 6 meters to

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%