Answer:
D. vacuole
Explanation:
A vacuole holds water, food, waste, nutrients, proteins, and carbohydrates. It also removes harmful things that can damage cells.
Answer:
In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment.
Explanation:
colour
Explanation:
chromatography differentiate out parts of solutions as in the form of different colours
Answer:
D and E
Explanation:
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