Question

wayne set up six tanks with equal volumes of 20°c water. three of the tanks contained water with a high salt content of 30 parts per thousand and three contained water with no salt. wayne added an equal amount of green algae to each tank. he allowed the algae to grow in the tanks for two weeks. then, he measured the amount of algae in each tank.
identify the question that wayne’s experiment can best answer.
do algae grow more in water with a high salt content than in water without salt?
is the growth of algae affected by the temperature of the water in a tank?
do algae grown in water with a high salt content release more oxygen than an equal amount of algae grown in water without salt?
(image: green algae growing in freshwater tanks)

Explanation:

Wayne's experiment has two groups of tanks: one with high salt content (30 parts per thousand) and one with no salt, both at 20°C, and he measures algae growth. The question "Do algae grow more in water with a high salt content than in water without salt?" directly relates to comparing algae growth between these two salt - level conditions, which is what the experiment is set up to investigate. The other questions either involve temperature (not varied in the experiment) or oxygen release (not measured in the experiment).

Answer:

Do algae grow more in water with a high salt content than in water without salt?