On the occlusal surface of a u type mandibular second premolar, the "u" pattern is due to the form of the:
(1) central groove and lingual groove.
(2) buccal ridge.
(3) ml and dl cusps.
(4) central groove and buccal triangular grooves.
(5) transverse ridge.

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted

What is the connection between a metalloid and a semiconductor