The part of a tree most adversely affected by acid rain is the:

The part of a tree most adversely affected by acid rain is the:

a. Leaves
b. Branches
c. Roots
d. Reproductive system
e. Bark




Answer: C

Hydrogen is considered ideal as an alternative fuel because:

Hydrogen is considered ideal as an alternative fuel because:

a. It burns at low temperatures, minimizing NOx formation
b. It has nearly the same heating value as carbon
c. It is safe and easy to store
d. Water vapour is the only product of combustion
e. The cost of production is minimal




Answer: D

Ozone is particularly hazardous in:

Ozone is particularly hazardous in:

a. The stratosphere 

b. The upper atmosphere
c. All levels of the atmosphere
d. All concentrations
e. The lower atmosphere





Answer: E

The greenhouse effect is responsible for:

The greenhouse effect is responsible for:

a. Heart and circulatory system strain
b. The diminishing maple sugar industry
c. Drought conditions
d. Fouling of fish gills
e. The death of microscopic life in lakes






Answer: C