19. Landslides, wildfires, and floods cause changes in the environment. Which of the following could be an effect of all three natural hazards?
A polluting the air
B) causing seed deposits
c) creating seed germination
D) destorying habitats

In which situation can a mixture always be called a solution

In 2002, the rare earth elements mine in mountain pass, california was closed because

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .