Chalcopyrite is the most important source of ore for
a. aluminum

b. silver

c. copper

d. platinum

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

What type of plant is good for a bioassay and where can i buy it? i only have a month.

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil