Plants respond to changes in their environment. They detect gravity, light, touch, and seasonal changes, and respond to these stimuli in many ways. Which statement best explains the flexibility in response? 1. Phenotypes are controlled by one gene that codes for multiple regulatory proteins.
2. The genes that regulate plant responses can be expressed in different ways
3. The genes that regulate plant responses can mutate to adjust to environmental changes
4. Phenotypes control the genotypes of individuals, determining plant responses

What feature of cell theory is best demonstrated in the image

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

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?