In Drosophila larvae there are two phenotypes, rover and sitters. The rovers expend more energy to find resources but have a fitness advantage as long as their frequency in the population is low. This is an example of which type of selection?

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters