What is the difference between food chains and food webs?

Apush or pull that moves or changes and object when to objects touch

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.