Osmosis involves which of the following processes?

a. movement of water up a concentration gradient

b. movement of solute up a concentration gradient

c. movement of water across a cell membrane

d. movement of solute across the cell membrane

Osmosis involves moment of movement of water across the cell membrane to maintain the concentration gradient

Option C

Explanation:

The exchange of solute or the solvent particles across a semipermeable membrane to match up the concentration gradient takes place through different processes of which the most common is the osmosis and the diffusion.

The osmosis involves movement of solvent or water from a low concentrated solution to a high concentration solution in order to equalize the concentration gradient on both the sides, diffusion is the movement of solute molecules.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".