There should be more groups of subjects, each consuming a different quantity of beta carotene.
Explanation:
For them to determine whether the amount Vitamin A absorbed by the body is dependent on the amount of beta carotene consumed, what they need to do is to create more groups each consuming a different amount beta carotene by so doing, they have been able to modify the experiment to determine whether the amount of vitamin A absorbed by the body is dependent on the amount of beta carotene consumed.
The experiment should have more different subject groups, with each group consuming a different amount of beta carotene.
Explanation:
When designing an experiment, to determine the effect of the amount of a substance, the experimental design should be done to accommodate more than two experimental group with each group treated with different amount of the substance and also a control group. This will enable the researcher to determine the effect of the different ranges of amount.
In the example, in other to determine if vitamin A is dependent of the amount of beta carotene consumed, there should be more different subject groups, with each group consuming a different amount of beta carotene.
The vinegar would tend to diffuse into the agar blocks decreasing the amount of vinegar outside the agar cubes and increasing the volume of agar cubes. Diffusion<span> is the movement of particles (ions or molecules) from an area of higher concentration to an area of lower concentration.
Cranial sutures are fibrous joints. Their function is to join the bones of the skull. Sutures are important for cranial growth. Once, the sutures completely fuse braincase does not grow further. Each suture fuse at a particular age.
