Answer:
A
B
D.
Explanation:
All these affect the rest of the world in some way.
Carbon monoxide is lethal
Mold spores affect animals and plants
Tobacco is also lethal
So A. Tobacco smoke
The population of Oregon which is given above may also be expressed in scientific notation as,
4 x 10^6
The magnitude of this number is the exponent of 10 in the scientific notation. Thus, the answer is letter "B. 6".
heat, wind, moisture/ humidity, dryness, natural disasters