(You don’t have to answer 2 and 3) 1. Read information about the West Nile virus and its effect on the bird population in the state you
live in. If your state has not been affected yet, choose another state that has. In your state,
how many birds have tested positive for the West Nile virus? Estimate what percentage of the
total resident bird population this number represents.

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

How does food concentration affect yeast activity