Please answer correctly. I really need this. Its not a joke. Thank you
1. What conditions might cause the most water and sediment to be collected at the bottom of the stream table?

Steep, high velocity, no silting. The high water speed picks up silt from the bottom instead of letting it settle to the bottom. When the land gets level like often happens at the mouth of rivers where the water spreads out and slows down, silt settles to the bottom and you could get a wide, shallow delta.

(Put in own words this is from online hope it helps)

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.