Lakesha was culturing bacteria. She used aseptic technique to make sure there was no contamination. When she was finished, she used water to clean the surface of her table. She then put the sample in the incubator, removed her gloves,
and washed her hands with soap and water.
Which error did Lakesha make in her process?

d. She should be using a disinfectant on her table, not just water.

Explanation:

When Lakesha finished culturing the bacteria, she should not have used water alone to clean the surface of the table as water alone would not remove bacteria from the surface of the table if some got there.

She should instead have used a disinfectant on her table as this would have had better chances of significantly reducing the probability of contamination.

gas

explanation:

smoke is the matter of a gas

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.