The five-kingdom system of classification reflects the idea that all organisms can be separated into two main groups
prokaryotes and eukaryotes. The new six-kingdom system recognizes three broader groups that include six kingdoms
How do the three basic groups of the six-kingdom system differ from those of the 5-kingdom system?
The six-kingdom system has three domains in order to includes a new
kingdom for viruses
The six-kingdom recognizes the vast differences in protists and divides
them into two kingdoms
The six-kingdom system has three domains two domains separate all
prokaryotic organisms into two new groups.
The six-kingdom system adds a broader classification of domain to divide
all living things into three groups microorganisms, plants, and animals

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?