Write about your way from home to school.

Заменить словосочетание одним словом

с помощью верёвки....

с помощью молотка и гвоздей...

с помощью нитки и иголки....

Answer the questions.
1. What do bones form?
2. How do bones act?
3. What is the body's major producer of both red and white blood cells?
4. What tendencies do bones have?
5. In how many ways are bones generally classified?
6. When does the formation of bone tissue begin?
7. Is compact bone strong or note?
8. What is called periosteum?
9. In what way does the bone loose its rigidity and become flexible?
10. Where are the osteocytes located?