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In fact, its atmosphere helps protect Earth from the Sun's harsh rays and reduces extreme temperatures, acting like a blanket wrapped around the planet.
Why does the earth have an atmosphere?
- Tại sao trái đất có bầu khí quyển?
REFER:In fact, its atmosphere helps to protect Earth from the Sun's harsh rays and reduces temperature extremes, acting like a blanket wrapped around the planet. (Thực tế, bầu khí quyển của giúp bảo vệ Trái Đất khỏi những tia nắng gay gắt của Mặt Trời và làm giảm sự khắc nghiệt của nhiệt độ, hoạt động giống như một chiếc chăn được quấn quanh hành tinh.)
The basic reason why planets orbit or orbit the sun is because the sun's gravity "holds" the planets in their orbits. Just as the moon revolves around the earth by the gravity of the earth, the earth revolves around the sun by the gravitational force of the sun.
IX.Find the mistake and correct.
4.What does she do last night? does => did
5.He were at the restaurant near his home this afternoon. were => was
2. We have Maths from Monday to Friday.
3. They don’t go to school on Sunday.
4. Quan and Mai have PE on Thursday.
5. Do you have Science and IT on Monday
6. My favorite subjects are Maths and English.
7. Does he s Art and Music at school
8. We have English three times a week.
It is a sunny Sunday. My brother and I are at the zoo. I like giraffes because they have long necks and legs. My brother likes lions because they run quickly.
Tạm dịch:
Đó là một ngày chủ nhật đầy nắng. Tôi và anh trai đang ở sở thú. Tôi thích hươu cao cổ vì chúng có cổ và chân dài. Em trai tôi thích những con sư tử bởi vì chúng chạy nhanh.
Solution
In the end, each of them have 18 picture cards:
54 : 3 = 18 (picture cards)
At first, Billy has 21 picture cards:
18 + 3 = 21 (picture cards)
At first, Paul has 13 picture cards:
18 - 5 = 13 (picture cards)
At first, Leon has 20 picture cards:
54 - (21 + 13) = 20 (picture cards)
Answer: Billy: 21 picture cards
Paul: 13 picture cards
Leon: 20 picture cards.
The sphere of the Earth is always half illuminated by the Sun, so day and night are born, because the Earth rotates on its axis, in turn, every part of the Earth's surface is illuminated by the sun.
Day and night are due to the Earth rotating on its axis