The force that develops when two solutions, each with a different concentration of solutes, are separated by a semipermeable membrane is: a. systolic pressure
b. diastolic pressure
c. osmotic pressure
d. atmospheric pressure

The correct answer is option c, that is, osmotic pressure.

Explanation:

The development of the force, which takes place when two solutions exhibiting distinct solute concentrations are distinguished by a semipermeable membrane is known as osmotic pressure. It is the least pressure that is required to be imparted to a solution to inhibit the inward pure solvent flow through a semipermeable membrane.  

The flow of solvent molecules via a semipermeable membrane to a region of high solute concentration from a region of low solute concentration, until attainment of equilibrium, is done is termed as osmosis.  

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explanation:

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.