Nutrients move through the ecosystem<span> in biogeochemical </span>cycles<span>. A biogeochemical </span>cycle<span> is a circuit/pathway by which a </span>chemical<span> element moves through the biotic and the abiotic factors of an</span>ecosystem<span>. It is inclusive of the biotic factors, or living organisms, rocks, air, water, and </span>chemicals<span>.</span>
Ans.
Diffusion, osmosis, and active transport are mechanism of cellular transport that involves movement of molecules through plasma membrane. Diffusion shows movement of small, hydrophobic particles without the help of protein molecules through cell membrane along the concentration gradient.
Osmosis involves movement of water molecules against concentration gradient (from an area of high solvent concentration to an area of low solvent concentration) through cell membrane.
Active transport shows movement of particles, against the concentration gradient, means from a region of higher to lower concentration of molecules through cell membrane. It involves transport through membrane proteins.
Thus, the part of cell, which is affected by the movement of molecules through osmosis, diffusion, and active transport is cell membrane or plasma membrane.
Whenever two objects<span> are touching, they usually </span>exert forces on each other<span>. The </span>force<span> of gravity, on the </span>other<span> hand, is an </span>example<span> of a </span>force<span> that exists between </span>objects<span> without them having to be in contact. </span>Objects<span> with </span>mass exert forces on each other<span> via the </span>force<span> of gravity.
PLEASE GIVE BRAINLIEST</span>
