How did the year come about? 7th grade winter vacation garden question .

Legend has it that the ancient year was a wild beast that lived in the mountains and forests, and every 365 days came to the village to eat people, people were very scared but could not do anything, but people found that the year always came in the evening and left at dawn the next day. One time the year was coming again, and the people gathered all the people together to eat"The Last Supper", this is the later Chinese New Year's Eve dinner. Later, when I came, I found that there was no one on the street.

Because the animals in the mountains and forests are afraid of fire, people set off firecrackers to drive away the New Year when it is almost dawn. I didn't eat anyone that year. The next day, people go out to congratulate each other and have not been eaten by the New Year, this is the origin of the current New Year's greetings, according to legend, the New Year likes to eat children, so adults will give children the money that is shocked, this is the New Year's money.

The above is an excerpt from my notes from history class.

A year is a unit of time that measures the Earth's rotation around the Sun.

The length of the year is the time interval that the Sun travels on the celestial sphere along the ecliptic from a certain punctuation point back to the same punctuation point. Due to the different calibration points chosen, the definition of the year is also different, usually there are:

Return year = Bessel year = day.

Sidereal year = day.

Nodal year = day.

Peripsie year = day.

Since 1984, astronomy has adopted the Julian year (not to be confused with the Julian calendar in the calendar) as a unified unit of time for the year, which is defined as a day, with an error of 1 day every 3,000 years compared with the return year.

In the modern Gregorian calendar, there are 365 days in a common year and 366 days in a leap year.

Huang Zhong archery - 100 shots and 100 hits.

Bao Gong's trial case - iron-faced and selfless.

Soochow recruits relatives - make the fake come true.

It's the most real thing to be the first backup yourself.

It's always bad to copy the answers.

I copied it too, but then my grades were bad and I realized I was wrong.

I sincerely advise you to change your ways.

Slowly correct it from scratch and slowly correct it.

This will help you a lot.

There is no problem with the answer on the first floor, the best way is to determine what kind of plant it is, and then add the season, light conditions, and what state the plant is in (such as germination, leaves, or flowering, etc.) to check the relevant information.

I wrote it:

Because the water is transported to various places through the catheter.

Water should be added in moderation.

I don't know if it's right.

Because if there is too much water, the roots of the plants will not be able to absorb enough oxygen, and the water will block the oxygen from the surface.

As for how to meet the requirements, it depends on the situation, because different plants have different water requirements, and the best time to water is also different.