Experiment: Remove about half of the grass by clicking the minus - button. There should
now be about 2,000 tons of grass. Click Advance year twice, and look at the Bar graph or
the Line graph. What happened to each population increase or decrease?
Prairie dogs:
Ferrets:
Foxes:
Prairie Dog
Ferret
Fox

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.