Which of the items below are true about acid rain? Acid rain affects our health. Acid rain increases precipitation. Acid rain increases the world's food supply. Acid rain is of greater concern in more-developed countries. Acid rain makes the soil less able to support agriculture.

Options (1), (4) and (5)

Explanation:

Acid rain can be simply defined as a type of precipitation where there is high concentration of hydrogen ion, mixed with water. This acids are formed when the toxic gases such as sulfur and nitrogen oxide are released into the atmosphere, and after the occurrence of condensation process, it leads to rainfall.

This acid rain can affect the lives on earth, as these toxic particles, mixed with air, can enter the bodies of organisms and can result in various lungs problems and other problems. Moreover, it is also responsible for contaminating the essential soil particles, thereby losing the fertility of the soil.

This acid rain is a major issue in the more-developed countries. It is because these countries are comprised of significantly large number of factories and industries and vehicles, that emits a large amount of toxic gases.

Thus, the correct answers are options (1), (4) and (5).

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.