I believe that is deforestation
Answer:
C
Explanation: all the others are considered very important in determining a substance so they would also be important for the level of environmental risk
Not the plants but the soul could be made into mud in both past and present. In past, most houses(not in the US) but in many countries were made up of soil. But know in present, soil or even mud is used to put it in the concrete to make the building strong in many countries like India. Good luck:)
Yaa that statement is true, complex chemical catalyst of living cells are enzymes
