A drop of water contains 2 x 10^4 bacteria. How many bacteria are in 100 gallons of water? [1 drop = 1 mL]

Number of bacteria in 100 gallons 757082.4×10⁴.

Explanation:

Given data:

Number of bacteria in one drop of water = 2×10⁴

Number of bacteria in 100 gallons = ?

Solution:

It is given that one drop of water is equal to the 1mL.

Now we will calculate the number of milliliters in 100 gallons.

1 gallons = 3785 mL

100× 3785.412 mL = 378541.2 mL

Now we will calculate the number of bacteria in 378541.2 mL or 100 gallons.

378541.2 mL × 2×10⁴ bacteria

757082.4×10⁴ bacteria

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.

plasma - state of matter made up of electrically charged particles