Answer: Heyo :)
(1) Maybe g oogle that one, im not sure
(2) march 21: celestial equator; june 21st ;Tropic of Cancer september 23rd; celestial equator; December 23rd: the Tropic of Capricorn
(3) <u>in a leap year, we add an extra day in February </u><u><em>(making it 29 days instead of 28)</em></u><u>. What goes around: The reason we have February 29 every four years is because of two different time cycles involved with the rotation of the Earth.</u>
Explanation:
<em>insp: nightmhares on brain.ly</em>
Explanation:
<h3>These include the chemical, cellular tissue, organ, organ system and the organism level. </h3>
Crust because it is right under the earth’s surface mark me as a brainliest