There is a question on my worksheet i do not

it’s - “design a short practical to prove how much glucose is produced by a plant per hour at different amounts of carbon dioxide.”

the thing i don’t get is a practical. what is a practical? ? and how do i design a “short practical? ”

If you want to create an electrical current, which situation would produce a solution capable of this

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0