how could you use biotechnology to protect a plant from insect damage?
a. add naturally produced anti-insect chemicals to the soil
b. insert genes that produce anti-insect chemicals into the plant
c. spray chemicals on plants to stop insects from eating them
d. insert genes that produce insulin into the plant

At which location in earth’s interior does the top density continue to increase as thickness decreases?

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

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?