Question

Fill in the blanks:
1. The area drained by the river and its tributaries is called a
2. The Greek letter A (delta) was first used by
3. The steep sloping segment of the swift flowing river is called a
4. Sand dunes keep shifting according to the direction of​

Answer 1

Answer:

Explanation:

1. The area drained by the river and its tributaries is called a RIVER BASIN

2. The Greek letter A (delta) was first used by Phoenician writing

3. The steep sloping segment of the swift flowing river is called a Meandring rivers.

4. Sand dunes keep shifting according to the direction of​ WIND.