Springs form where
a. there is no water table.
b. flooding makes streams overflow their banks.
c. groundwater sinks into the soil.
d. the water table intersects the ground surface.

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

The endoplasmic reticulum (er) is an organelle in some cells. in these cells, it is continuous with the nuclear membrane and forms a large part of the cell\'s total membrane. sort the phrases below as describing rough er, smooth er, both, or neither. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the phrases are sorted incorrectly.1) found in prokaryites and uekaryotys2) involved in protein synthesis3) involve in lipid synthesis4) contains molecular chaperones in lumen5) bound with ribosomes6) involved in toxin or drug metabolism7) large systemot internnected tubules, vesicles, and sacs8) "packages" enzymes in vesicles for secretion.

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?