1. Annotate the calendar below to show approximately when the four seasons occur during the year.

Spring runs from March 1 to May 31

Summer runs from June 1 to August 31

Fall (autumn) runs from September 1 to November 30

Winter runs from December 1 to February 28 (February 29 in a leap year).

Explanation:

According to the meteorological definition, the seasons begin on the first day of the months that include the equinoxes and solstices:

Spring runs from March 1 to May 31;

Summer runs from June 1 to August 31;

Fall (autumn) runs from September 1 to November 30; and

Winter runs from December 1 to February 28 (February 29 in a leap year).

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.