Two different species of birds live on an island, The red birds have short, very strong beaks and the blue birds have long, weaker beaks. These birds have different food sources that help to sustain their populations, the red birds eat seeds that have hard shells and the blue birds tend to eat insects and small seeds. Yellow birds with medium sized beaks migrated to the island and mainly feed on small seeds, what is most likely to happen to the bird populations?

The red bird population
will decrease

The blue bird population will decrease

Both bird population will decrease

Neither bird populations will be affected

What is hydroelectric power produced by?

Using the periodic table, determine which material is most likely a good conductor

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?