(Question)
Q: What common air pollutant is characterized by its sharp odor and often triggers asthma attacks? Choices: - plant dioxide - pigment dioxide - Carbon Dioxide - nitrogen dioxide A:
(Answer)
nitrogen dioxide

(Question)
Q: Water moving up the plane and evaporating from the leaves is a process known as what? Choices: - propagation - sublimation - evaporation - transpiration A:
(Answer)
transpiration

(Question)
Q: The tyndall effect refers to the scattering of what by colloidal particles? Choices: - primary colors - dark matter - dust mites - visible light A:
(Answer)
visible light