Which of the following describes a cause of natural selection? A. Individuals within the population acquire traits to adapt to the environment
B. Some members of the population have adaptations that allow them to survive in their
environment
C. Disasters, like floods and fires, kill all members of a population in an area
D. Members of a population have random mutations in their offspring

Consider the skeleton. which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

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?

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above