1. Tony is managing Ahmed during the project to clean up a park in Wyoming. He is working with a team of other scientists to find out how to reduce pollution that is making others sick. environmental scientist
2. Ahmed is working on solving the degradation of natural resources in a park in Wyoming. He is investigating the source of pollution that is making the fish ill in a nearby river.
protection technician
3. Stephanie and her colleagues are working with Ahmed to clean up a river in Wyoming. She is an expert in groundwater supplies.
hydrologist

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.

c) up is the direction the magnetic force is acting on the charge.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me