20 points and brainliest!
1. name two contributions made by soil organic matter to the environment.
2. what happens to the ph of the ocean seawater as carbon dioxide dissolves into it?
3. give two relationships between greenhouse gases and heat radiation that negatively affect the globe.

1 - :( (Sorry idk)

2. the PH of the ocean decreases as the CO2 dissovles into it

3. a) Greenhouse gases can trap sunlight in side the earth making the Earth more hotter.

b) Cars/Trains/Buses release CO2 which is also greenhouse gas which can cause global warming

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."