Africa is the ... largest continent in the world.

The world's longest river, ... is found in Africa!

The people of Africa speak over ... languages.

Choose 3 natural resources found in Africa.

Choose 3 animals that call Africa home.

The large geographical feature in the north of Africa which tremendously affected the way in which North Africans lived is called the ...

There are many animals living in which biome?

Geography affected settlement patterns in West Africa.

True or false?

How is transportation conducted in the desert?

What was used for transportation in the rainforest because of the tsetse fly?

Which trading resource was provided by the desert?

What is the largest desert in Africa?

Which climate zone in Africa is an area of grasslands?

Why is water in Africa shrinking? Choose two.

Fossils of ... in the Sahara were proof that the desert was once underwater.

What is this a picture of?

Which term characterizes the climate of much of Northern Africa

Nelson Mandela was a civil rights leader in what country?

With over 9 million people, ... is northern Africa's largest city.

The Nile River is located in which continent?

Deserts have limited agriculture production.

True or false?

It is difficult to grow crops in much of inland Africa MAINLY because of the region's lack of ...

Judging from the map, which area of Africa is most vulnerable to deforestation?

What is the main reason farming is unsuccessful in Africa?

According to this image, in which part of Africa is water the most scarce?

Which is NOT a cause of Africa's water pollution problem?

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Em hãy đánh dấu vào câu chỉ hoạt động:

Tìm từ chỉ sự vật.

Tìm từ chỉ đặc điểm.

Chọn từ thích hợp cho câu sau:

Con mèo đuổi theo .......................

Chọn đáp án phù hợp nhất tương ứng với tranh sau?

Chọn đáp án phù hợp nhất tương ứng với tranh sau?

Chọn đáp án phù hợp nhất tương ứng với tranh sau?

When you go to sleep at night, you probably think that you are not doing much. Your body is in one place, your eyes are closed, and you don’t talk to people. But your body is doing more than you think it is! Scientists have used special, sophisticated machines to study the way people sleep. They have found that your brain is actually very busy when you sleep. There are several stages of sleep in a sleep cycle. You go through the sleep cycle multiple times each night. Your brain’s activity level is a little different in each stage. The final stage of the cycle is called rapid eye movement (REM) sleep. During REM, your eyes are moving even though you are asleep. That is how this stage got its name. Most of your dreams occur during REM sleep.

What is your brain doing while you are sleeping?

When you go to sleep at night, you probably think that you are not doing much. Your body is in one place, your eyes are closed, and you don’t talk to people. But your body is doing more than you think it is! Scientists have used special, sophisticated machines to study the way people sleep. They have found that your brain is actually very busy when you sleep. There are several stages of sleep in a sleep cycle. You go through the sleep cycle multiple times each night. Your brain’s activity level is a little different in each stage. The final stage of the cycle is called rapid eye movement (REM) sleep. During REM, your eyes are moving even though you are asleep. That is how this stage got its name. Most of your dreams occur during REM sleep.

What is true about people during REM sleep?

When you go to sleep at night, you probably think that you are not doing much. Your body is in one place, your eyes are closed, and you don’t talk to people. But your body is doing more than you think it is! Scientists have used special, sophisticated machines to study the way people sleep. They have found that your brain is actually very busy when you sleep. There are several stages of sleep in a sleep cycle. You go through the sleep cycle multiple times each night. Your brain’s activity level is a little different in each stage. The final stage of the cycle is called rapid eye movement (REM) sleep. During REM, your eyes are moving even though you are asleep. That is how this stage got its name. Most of your dreams occur during REM sleep

How else could you say asleep?

Do you ever remember your dreams? You may not remember what you dream, but you probably dream every night—almost everyone does. Why do you have dreams? Scientists disagree on exactly why you dream. Some say it is your brain’s way of processing things. You learn a lot and have a lot of things happen to you, so while you sleep, your brain processes that information. Dreaming might be the way your brain makes sense of what happens to you. Some say that dreams are the way your brain solves problems. Suppose you are upset about something. Dreams may be a way for your brain to help you feel better. People may not agree on why you dream. But everyone agrees that dreaming is very important. You need to dream so that your brain is ready for the next day

What is this text mostly about?

Do you ever remember your dreams? You may not remember what you dream, but you probably dream every night—almost everyone does. Why do you have dreams? Scientists disagree on exactly why you dream. Some say it is your brain’s way of processing things. You learn a lot and have a lot of things happen to you, so while you sleep, your brain processes that information. Dreaming might be the way your brain makes sense of what happens to you. Some say that dreams are the way your brain solves problems. Suppose you are upset about something. Dreams may be a way for your brain to help you feel better. People may not agree on why you dream. But everyone agrees that dreaming is very important. You need to dream so that your brain is ready for the next day

Which statement about dreams is not true?