The following diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water. The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
A.
The total number of particles in the system increases.
B.
The total number of particles in the system decreases.
C.
The total mass of the particles in the system stays the same.
D.
The total mass of the particles in the system increases.

no middle schooler awnser my questions

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.