Knee pain and popping is a common problem and can be caused by a number of factors. Another term commonly used for popping in the knee is Crepitus, which essentially means a noisy joint, whether it be popping, clicking, cracking or snapping.
The final type of erosion is attrition. Attrition is a way of eroding the riverâs load, not the bed and banks. Attrition is where pieces of rock in the riverâs load knock together, breaking chunks of rock off of one another and gradually rounding and shrinking the load.
Nitrogen-containing compounds act as nutrients in streams and rivers. Nitrate reactions [NO3-] in fresh water can cause oxygen depletion. Thus, aquatic organisms depending on the supply of oxygen in the stream will die.acteria in water quickly convert nitrites [NO2-] to nitrates [NO3-]. Nitrites can produce a serious condition in fish called brown blood disease.. Nitrites also react directly with hemoglobin in human blood and other warm-blooded animals to produce methemoglobin.