Which statements are true?
a. science is a collection of facts that does not evolve. we have gained all the knowledge we can from science.
b. scientists observe natural events occurring around them. they question these observations and investigate them.
c. all scientists follow one scientific method of investigation.
d. if a hypothesis is not verified by the results from the scientific method, scientists may either redo the process or create a new hypothesis.
e. once they reach a conclusion, scientists often keep the results to themselves.

b and d

Explanation:

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

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joke:

h o h o hope you have a merry christmas!