EC: American 19 gauge wire has a diameter of 0.03589 in Solid platinum has a density of 21.45 g/cm3 t. As of 03/10/2021 the price of platinum is $ 1,176.35 per troy ounce (1 troy ounce =31.103 g).
Calculate for 275 feet of wire: The volume in cm3; the weight in pounds; how many feet of wire you can buy for $2000.

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

1b. convection2f. the same

Diagram is attached below

Can i get a picture of the passage