Answer:
science answer questions about what people should do
Answer:
A) Power plant
Explanation:
The key to understanding this question, is first knowing what "stationary" means. When something is stationary, it doesn't move, it just stays in one place.
Since power plants are buildings, they naturally don't move. On the other hand, the other choices are all vehicles that are intended to move. So while all of these options do cause air pollution, the power plant is the only one that is stationary.
I hope this answer helps you :)
Answer: Option B
Pigs wallow in the mud to cool themselves down.
Explanation: Pigs' skin contains lots of fats, and fats serves as thermal insulator during cold (low temperatures); unfortunately, this feature turns becomes a disadvantage during heat (high temperatures). Hence, pigs frequently wallows in the mud (or any nearby cool water place) - to reduce their body temperature.
