Grade 9 Natural Sciences

Unit 1 – Cells as basic unit of life

Answers for Activity 2 on page 16 an for Exercise 1 on page 22

Unit 3- The human reproduction system

Answers for Exercise 8 on page 130 and Exam questions on page 137

Unit 2

The Digestive system – Answers for Activity 5 on page 44 and Exercise 2 on page 45

The Circulatory system – Answers to Activity 6 on page 62 and Exercise 4 on page 63

The respiratory system – Answers to Activity 8 on page 72 and Exercise 5 on page 73