We can choose our friends, but we cannot choose our relatives. That does not mean that members of our family cannot also be our friends. Many children have a very good relationship with their parents, and they see them as friend. Of course when you are a teenager, there are times when you do not get on very well with your parents, or they can get angry with you. That's only natural. There are times when you want to be independent and decide things by yourselves . After all, nobody is perfect , and we are all make mistakes. But your parents understand that. When you grow up , you will see that you have many things in common with your mum and dad.

Thực vật có vai trò to lớn trong điều hòa khí hậu

của e nek

Mom : What do you want to eat for dinner ?

Dad: I want to eat some beef and a cup of tea .

Younger brother : I want to eat cheese .

Mom : OK .

But have no pocket of tea , yogurt and fresh milk . Can you buy for me it ?

Elder sister : Yes , I can .

In the store ...

Buyer ( elder sister ) : Excuse me !

Salesgirl : Can I help you ?

On Tet last year, my village organized a village festival. There were a lot of competitions, interesting games ... But I felt most impressed with the wrestling competition. A wrestling match consists of two athletes. All of them look healthy and muscular. I have been fortunate to see the final match of the competition. When the organizers announced the start of the competition, the two walked into the field to bow to the audience. The referee blows his whistle and waves a flag to signal the game to start. The two wrestlers used their strong hands to dance to warm up. Legs constantly jumping, back and forth to probe the opponent. The drumming along with the cheering of the audience made the atmosphere become very exciting. The two wrestlers came close together, their hands held on the opponent's shoulders. Their bodies look very powerful. And the face is already sweating. Instantly, the green scarf wrestler managed to fall his opponent to the ground with a dangerous stance. The referee signaled the time to wait for the red scarf wrestler to stand up. "Three ... two ... one ... Time out!" - Red towel wrestler is still lying on the floor. The audience applauded, shouting to congratulate the green scarf wrestler's victory. The referee steps up next to the victorious wrestler,

then he held up their hand. After that, both wrestlers raised their muscular arms to wipe the sweat from their faces and then raised their hands to end the battle. The wrestling festival is so interesting and exciting.

Chúc bạn hok took nha

Nhờ thực vật trong quá trình quang hợp đã lấy chất cacbonic( CO2) và thải ra khí ô-xi(O2) nên hàm lượng khí cacbonic và ô-xi trong không khí luôn luôn được ổn định

của e nek hok tôk

a.Cỏ ---> Đề ---> Mèo rừng ---> Cáo ---> VSV.
Cỏ ---> Thỏ ---> Gà rừng ---> VSV.
b. Lưới thức ăn có những mắt xích chuq:
+ Sinh vật sản xuất ( cỏ )
+ Sinh vật ăn thực vật ( đề, thỏ )
+ Sinh vật ăn thịt ( mèo rừng , gà rừng , cáo )
+ Sinh vât phân giải. ( VSV )

Có vai trò:Rừng là lá phổi xanh của trái đất. Cây xanh, trong quá trình quang hợp, hấp thụ khí cacbonic và nhả ra khí ôxy cần thiết cho sự sống.

Rừng có tác dụng làm trong sạch không khí. Tán lá cản và giữ bụi. Lá cây tiết ra nhiều loại chất kháng khuẩn có tác dụng tiêu diệt vi trùng gây bệnh trong không khí.

Rừng là nơi sinh sống của nhiều loài động vật hoang dã, trong đó có nhiều loài quý hiếm.

 1/2+1).(1/3+1).(1/4+1).....(1/98+1).(1/99+1)

= 3/2.4/3.5/4......99/98.100/99

=100/2