Answer:
B. Some countries have many sources of beryllium, and some have no sources of beryllium.
Explanation:
Beryllium is a very important mineral that is present in many countries. All countries did not have beryllium deposits. Some countries have many sources and deposits of beryllium, and some have no sources of beryllium. There are many deposits of beryllium in different parts of United states of America. Those countries which have no beryllium deposits have cell phones because they purchase cell phones from international market by paying money which can be earned through selling of its goods.
Enzymes are considered catalysts, they help reactants and can be used over and over
Ok I think its small polar molecules but I could be wrong.
Answer:
c. minerals form rocks
Explanation:
rocks are formed from combinations of a few common minerals, hope that helps
Answer:
Las montañas generan sombre y brisa, mientras que que en una pradera que es casi llano el calor se acumula en el suelo pero el problema es la de forestación que provoca que las arboles que actuaban como las montañas dañen el entorno secando el fresco y húmedo suelo causando problemas con el ambiente
