"in order to reduce the amount of air pollution in pennsylvania, which change is necessary?
(1)laws must be passed to protect endangered species.
(2)the use of natural resources must be increased.
(3)more coal-burning power plants must be built.
(4)the cooperation between the different states must be improved."

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.