Diagrams A-D show the sequence of changes in a pond. 1. Look at each stage of ecological succession. Describe your observations for each stage.

a)

b)

c)

d)

2. Based on your observations, what is the sequence of steps in the illustrated ecological sequence?

3. Predict what will happen to the pond.

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.

within 30 of the equator hope this

do yall know the answer?

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.