One reason it was a health threat is it caused teeth to become ground down which would then lead to infections. The same was true with their eyes and lungs, sand would be blown into their eyes or inhaled into their lungs and then could cause infections.
Answer: А The monthly supply of milk must increase by 8 billion gallons.
Explanation:
The demand is 18 billion gallons and the supply is 10 billion gallons a month. For equilibrium to be reached, the supply needs to reach a level of 18 billion gallons a month because equilibrium means that Supply is equal to Demand.
For the supply to reach this amount per month, it needs to increase by:
= Amount needed - Amount currently supplied
= 18 billion - 10 billion
= 8 billion gallons a month
Tropical rainforests have the most diversity of any other ecosystem
If this is for an essay or something, i would suggest starting on google scholar and just typing in “sports fashion”; they have credible sources but a few bad ones are mixed in so just make sure you can trust the source.
I would guess it to be 'a' as most of the country is run by the government
