Which of the following statements are true about air? 1. Air can be compressed (pushed into a smaller space) 2. Air has mass 3. Air takes up space. 4. Air does not have weight. 5. Air is a mixture of oxygen, nitrogen, and other gases. 6. Air pressure is greatest on the top of a mountain.

4.Air does not have weight

1 is true, 2 is true, 3 is true, 4 in true, 5 is true,

Explanation:

6 is false

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.

doctors i believe if i'm wrong sorry