1: 1. Lake Baikal, Russia 2. Lake Titicaca, Bolivia/Peru 3. Lake Superior, North America 4. Lake Victoria, Africa 5. Great Bear Lake, Canada

2: 6. Crater Lake, Oregon 7. Lake Tanganyika, Africa 8. Lake Michigan, North America 9. Dead Sea, Israel/Jordan 10. Lake Malawi, Africa

3: 1. Lake Baikal, the oldest and deepest lake in the world, is a UNESCO World Heritage Site. 2. Lake Titicaca is the highest navigable lake and home to the Uros people. 3. Lake Superior is the largest by surface area and holds 10% of the world's fresh water.

4: 4. Lake Victoria is the largest lake in Africa and a vital water source for surrounding countries. 5. Great Bear Lake is the largest lake entirely in Canada and is known for its crystal-clear waters.

5: 6. Crater Lake was formed by the collapse of a volcano and is known for its deep blue color. 7. Lake Tanganyika is the second oldest and second deepest lake in the world. 8. Lake Michigan is the only one of the Great Lakes located entirely within the United States.

6: 9. The Dead Sea is one of the saltiest bodies of water in the world and is a popular tourist destination. 10. Lake Malawi is home to more species of fish than any other lake, making it a diver's paradise.

7: 1. Lake Baikal's unique ecosystem includes the Baikal seal, the world's only freshwater seal. 2. Lake Titicaca is surrounded by ancient Inca ruins and is considered a sacred site. 3. Lake Superior's rugged shoreline is popular for outdoor activities like hiking and kayaking.

8: 4. Lake Victoria's shores are dotted with fishing villages and bustling markets. 5. Great Bear Lake is a prime spot for fishing and is home to a diverse range of wildlife.

9: 6. Crater Lake's Wizard Island is a popular stop for boat tours and hiking trails. 7. Lake Tanganyika supports local fishing communities and is a hotspot for biodiversity. 8. Lake Michigan's sandy beaches and lighthouses draw in tourists from around the world.