No there are 4 pre early middle and late
Coal mining causes massive land use, tailings (waste), pollution to the air and water, and the effects it can have on the workers mainly includes respiratory problems.
Some things that could happen to prevent pollution is to keep the area as contained as possible away from water outlets. Safer, environmentally friendly chemicals could be used instead of chemicals that pollute the air and water. Mining waste needs to also be properly disposed of and away from any water is could seep into.
Let:
x be the amount formula (oz)
3x be the amount of water (oz)
x + 3x = 120
4x = 120
x = 30
Then:
x = 30
3x = 90
A 120 oz of ready to consume infant feed should be composed of 30 oz of formula and 90 oz water.
1. breathing exercises
2. meditation/relaxation
3. therapy
4. taking breaks
Answer: the bed and the chair maybe?
