When do the greatest tidal ranges occur? a. spring tides c. high tides b. neap tides d. low tides

The tides with the greatest difference in water level is A) Spring Tides, with the collaboration of returning of the sun to the northern hemisphere and the tides of the New and Full Moon bring tidal waves above the level of high tide.

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.