A species that is not native to an ecosystem but is introduced artificially. Usually cause harm to the native species in the area.
Answer:
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
Explanation:
Canopy layer my friends :D
Answer:
A. A newly paved parking lot
Explanation:
