A gas chromatography test is run on a certain compound and can detect the specific molecules that make it up in order to determine the exact identity and composition. this test can help identify unknown substances as caffeine, hydrocodone, acetaminophen, etc. based on this information, a gas chromatography test is a(n) a. confirmatory text
b. presumptive test
c. determinatory test
d. indicative test

I think a. Hope this helped!

Explanation:

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.

idk

explanation: