How are the abbreviations of the base units different from the other abbreviations?

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

In which part of the body is a ball-and-socket joint found?