Heidi is shown 16 flowers, 4 of which are blue and 12 of which are red. when asked, "are there more red flowers or flowers? " heidi, a preoperational child, responds, "more red flowers." this problem demonstrates heidi's difficulty with

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

i believe it is c: genes for body color and wing size are inherited separately from each parent.