1. № 1 A fox, running from a dog, following it, often survives by making quick movement to the side just at the moment the dog is ready to catch it. Why is it difficult for a dog to catch a fox?

2. It is known that snakes don’t have an inner ear.
№ 138
It is known that snakes don’t have an inner ear.
Then how do they feel sound vibrations?

3. № 351
Why do the most animals of the Far North have the white colour and those who have another colour, like a squirrel or a rabbit, change it to white in winter?

4. № 10
Explain why a sportsman lands on bend legs at the end of the leap (jumping)?

5. № 142
In the forest it is quite difficult to understand where the sound comes from. Why?

6. Who warms more in the sun: a sunburnt or an untanned man?
№ 354
Who warms more in the sun: a sunburnt or an untanned man?

7. № 18
Why does a running man who wants to turn a column or a tree very fast, holds it with a hand?

8. How do wild ducks get warm in freezing temperatures?
№ 185
How do wild ducks get warm in freezing temperatures?

9. Why does a squirrel need a big tale? And a fox?
№ 21
Why does a squirrel need a big tale? And a fox?

10. When a man is cold he begins shaking, why?
№ 202
When a man is cold he begins shaking, why?

11. When a man is cold he begins shaking, why?
№ 202
When a man is cold he begins shaking, why?

13. When a man is cold he begins shaking, why?
№ 202
When a man is cold he begins shaking, why?