1.1.10 In humans, oxygen and carbon dioxide are exchanged between the
alveoli in the lungs and the blood in the circulatory system. Which of
the following processes allows for the exchange of these gases in the
human body?
A. osmosis
B. simple diffusion
C. active transport
D. facilitated diffusion

As a small change in a person's dna can cause a genetic disorder

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

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?