The next question refers to This Mystery Rocks! by Cynthia Schlagel.
The sentences have been numbered to help you identify them more easily.
This Mystery Rocks! By Cyntha Schlagel
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"The Drifting Rocks are a strange phenomenon still unexplained by science.
2 Located in Death Valley, California, the rocks sit on hot, flat ground. Unlike
normal rocks, they have trails etched behind them as if they have traveled across
the sand. 4some trails are only a few feet. “Some trails are over a half a mile long.
'Each trail is as baffling as the next.
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The variety of rock movement has baffled scientists for decades. Some rocks
seem to roll as they move forward. Some take unexplainable routes. 1°Large
ones have traveled past small ones that have stayed still. 11Some scientists
suggest that the rocks are pushed by wind. 12 Others believe they slide on small
amounts of ice or mud. 13so far, research has not confirmed any theory.
Which sentence best identifies the main idea of paragraph two? (4 points)
Scientists are baffled by the different ways the rocks move.
PE
O Scientists are confused by the different ways the rocks move, and theories involving
wind, ice, and mud have not been confirmed.
Scientists have theories of how the rocks move.
The rocks have stumped scientists because some roll, some take unexplainable routes,
and some have traveled past ones that have stayed still, but scientists have theories that
the rocks are pushed by wind or that they slide on ice or mud.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

what arguments, appeals, and rhetorical strategies did patrick henry use in 1775 to persuade reluctant members of the second virginia convention to develop a military response to british aggression or n 1775 american independence was not a foregone conclusion. while there had been unrest and resistance in massachusetts with scattered acts of support from other areas, no organized movement toward revolution existed across the colonies. virginia ranked among the largest, wealthiest, and most populous colonies in 1775, and her political and military support for independence would be crucial for success. in this speech patrick henry (1736–1799) uses powerful rhetoric to convince influential, affluent, landed men of virginia with much to lose to move past their current diplomatic posture opposing british aggression to the more treasonous one of open military preparedness. hope it

explanation:

i just had to do some research a while stayed up all night