1 USA has five time zones.
2 Every fourth year is a leap year.
.
GIVE REASONS
Answers
Answer:
1. From east to west they are Atlantic Standard Time (AST), Eastern Standard Time (EST), Central Standard Time (CST), Mountain Standard Time (MST), Pacific Standard Time (PST), Alaskan Standard Time (AKST), Hawaii-Aleutian Standard Time (HST), Samoa standard time (UTC-11) and Chamorro Standard Time (UTC+10).
2. Nearly every four years, we add an extra day to the calendar in the form of February 29, also known as Leap Day. Put simply, these additional 24 hours are built into the calendar to ensure that it stays in line with the Earth's movement around the Sun.
Explanation:
Hope it helps u…mark as a brainliest
Answer:
1. Large countries like U.S.A,Canada, Australia and Russia have many time zones because they have a large width and a vast East to West extent.
2. We have a leap year every four years because the Earth does not revolve around the sun in an even number of days. The Earth needs 365.25 days to go around the sun. That extra quarter, or one-fourth, day, added up four times, means that we need to add a day to the yearly calendar every four years.