Scientist are trying to determine the function of an organelle in a plant cell. they observe that water and carbon dioxide enter the organelle, and oxygen and glucose exit the organelle. this organelle is most likely

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Which represents a negative impact of technology

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a. control b. hypothesis c. procedure d. system