A school is creating a small parking lot next to the school. They will need 998,140 grams of rock for the parking lot. How many pounds of rock does
the school need? (1 kg = 2.205 lb)

2200.9lb

Explanation:

This is a conversion problem.

 We have been given that:

            Mass of rock the school needed  = 998140g

Unknown:

       Pound of rocks the park needed  = ?

To solve this problem, we have to convert from:

     grams to kilograms and then to pounds

            1000g of the rock will weigh 1kg

  So;       998140g of the rock will weight 998.14kg

Therefore:

               1kg of a substance weighs 2.205lb

           998.14g will weight2.205 x 998.14  = 2200.9lb

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide