Through the process of materials move across a cell membrane from an area of higher concentration to an area of lower concentration.
a.
diffusion
b.
photosynthesis
c.
friction
d.
cellular respiration

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

The element that has the greatest electronegativity is

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?