A species of lizard can range in color from very light brown to very dark brown. It lives in a forest hiding among the dead leaves. One year, a fungus starts to grow over the dead leaves, creating a very powdery white coating. The light colored lizards can now blend in much better with the leaves than the dark lizards.
What are the extreme traits?
What is the middle trait?
What trait(s) are being selected for?
What trait(s) are being selected against?

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2