Here’s how you can match the words and definitions:

1. A nomad → e. a person who often moves to find new lands for growing rice
2. A buffalo-drawn cart → f. a means for transporting and carrying heavy things by using animals
3. Harvest time → b. a period of the year when farmers collect their crops
4. A ger → a. a place the Mongolian people live in
5. Meadow → c. a vast area of grass for raising cattle
6. Herding → d. an activity for taking cattle out for food and looking after them

Now, here are complete sentences using relative clauses:

1. A nomad is a person who often moves to find new lands for growing rice.
2. A buffalo-drawn cart is a means for transporting and carrying heavy things by using animals.
3. Harvest time is a period of the year when farmers collect their crops.
4. A ger is a place where the Mongolian people live.
5. A meadow is a vast area of grass where cattle are raised.
6. Herding is an activity in which cattle are taken out for food and looked after.