I'm pretty certain that the earth's circumference is greatest at the equator.
If the question is referring to an osmosis experiment, the high test concentration of sugar in at the beginning will be INSIDE the visking tubing.
I think D from what I remember in Biology when I was in freshman
Valves are structures that allow for one-way blood flow through the heart.
<span>E)detritus-insect-frog-snake would best represent the food chain.
Detritus is a residual from plants that are decomposed. This will be eaten by insects such as flies.
After that, the flies will be eaten by the frogs who hunted on ponds before they eventually eaten by the highest level carnivore (such as snakes or Big birds)</span>
