4.3 because when it comes in contact with sulfur dioxide or nitrogen oxide it makes it more acidic and the normal ph of rain is between 5.0 and 5.5.
A) Increase plant cover & B) use retaining walls
Four things that need to be maintained when maintaining homeostasis is that your cells must be able to obtain and use energy, you have to make new cells, exchange materials, and eliminate wastes.
Answer:
Explanation:
Transfer RNA (tRNA) precursors undergo endoribonucleolytic processing of their 5' and 3' ends. 5' cleavage of the precursor transcript is performed by ribonuclease P (RNase P). While in most organisms RNase P is a ribonucleoprotein that harbors a catalytically active RNA component, human mitochondria and the chloroplasts (plastids) and mitochondria