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.

Acid rain is a harmful natural phenomena which is caused due to human activities that adversely affect nature primarily due to air pollution, acid rain can cause adverse health effects, and make the soil less suitable for agricultural use due to increased ph, also as acid rain is caused due to human activity it is therefore of more concern in more developed countries as opposed to lesser developed countries. 

Enzyme make a hormone as a catalyst

Neither model is able to show the reactivity of potassium.