Four discs, each soaked in a different antibiotic, were placed on the surface of a culture plate that had been innoculated with E. coli bacteria. The diagram below shows the culture plated
after it had been incubated for 48 hours.

Key:
Shaded area
represents E. coll
Clear area represents
absence of E. coli
Antibiotic disc
P= penicillin
E=erythromycin
8 = streptomycin
C=chloramphenicol

Whích antibiotic was most effective in inhibiting the growth of E. coli?
1.penicillin
2.erythromycin
3.streptomycin
4.chloramphenicol

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.