Which of the following observations demonstrates that light waves are electromagnetic and not mechanical? Group of answer choices

A. sunlight can pass through gas

B. sunlight can pass through a solid

C. sunlight can pass through a vacuum

D. sunlight can pass through a liquid

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

Construct at least two possible hypotheses for the student’s experiment.

How much does one sucrose molecule weigh in grams?