Penicillin is an antibiotic that was discovered in 1928. today many species of bacteria have acquired resistance to penicillin. this adaptation occurred as a result of

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.