In the passage, what does David Sandwell state the main problem is with radar, lidar, and sonar
technology?
A. There are often ocean depth's where the radar
and lidar systems cannot penetrate.
B. There are satellite mapping techniques that
aren't nearly as accurate as radar, lidar and
sonar.
C There are often areas of the ocean that are
mapped completely, but in too great of detail.
OD There are often areas of the ocean where coral
reefs grow too thickly for them to see clearly.

Which best corrects the run-on sentence? the belt of orion has three bright stars in a row it is visible in the northern hemisphere. a. the belt of orion has three bright stars in a row, and it is visible in the northern hemisphere. b. the belt of orion has three bright stars in a row. in the northern hemisphere, it is visible. c. the belt of orion is visible in the northern hemisphere; has three bright stars in a row. d. the belt of orion has three bright stars in a row; visible in the northern hemisphere.