They start to make more advanced creations
Answer: chief of which is a gradual decrease in the fertility and hence the productivity of Egypt’s riverside agricultural lands
Explanation:
The Rub' al Khali or Empty Quarter is a desert in Saudi Arabia. It is one of the largest sand deserts in the world. It covers an area of about 650,000 square kilometres, more than all of Holland, Belgium and France together. Some of the sand dunes are more than 250 metres high.
Answer:
Decline in the intensity of sexual response.
Explanation: