Black fur in labs is dominant (B) and brown fur is recessive (b). how many recessive genes does a lab need in order to have brown fur? 1. One
2. Two
3. None
4. Three

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

Which short-term environmental change is most likely to lead to ground shifting, landslides, and the collapse of buildings or roads? forest fires flooding earthquakes

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic