4. Red-green color blindness (b) is a recessive sex-linked trait. A colorblind male marries a normal
female. Their daughter is colorblind. To receive credit answer the questions and complete the
Punnett Square.
a)What are the genotypes of both parents and the daughter?
b) Can a colorblind father have daughters who are not colorblind? Explain.
c) If a normal sighted woman whose father was color-blind marries a color-blind man, what is the
probability that they will have a color-blind child?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

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?

What type of pollution does household garbage cause