What supernatural occurrences does Lennox describe that happened overnight? What might their significance mean?
(Act II scenes I-IV)

The supernatural occurences that Lennox speaks about in Act II, Scene III that happened during the night. These occurences were screeching of birds at night, earthquakes, winds were strong enough to knock down the chimneys, etc.

The occurences of these supernatural happenings signified the disruption in nature brought by Macbeth by murdering King Duncan. The nature became violent because of the disturbance brought by Macbeth in the order of nature by fulfilling his ambition of becoming the king by murdering King Duncan.

Explanation:

'Macbeth' is a tragedical play penned by William Shakespeare. The play is about the tragedical fall of Macbeth, the titular character, under the weight of his insatiable ambitions.

In Act II, Scene III, after King Duncan was murdered by Macbeth, supernatural occurences began to happen in Scotland. Lennox reports to Macbeth that in the night strange occurences began to happen such as winds were so strong to uproot the chimneys, birds were screeching all night, earthquakes were reported, unusual screams of death were heard, etc.

The significance of these occurences were related to the murder of King Duncan. These supernatural occurences happened because Macbeth murdered King Duncan and turned the order of nature by doing so. Macbeth turned the natural order of becoming the king by murdering King Duncan, that's why nature began to rage violently against what Macbeth has done.

the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process

i agree, but what is the question here?

explanation: