Answer:
The correct option is 3
Explanation:
An experimental investigation would require an hypothesis, aim, methodology, results, discussion and conclusion.
The third option can be easily answered using the "requirements" above.
The hypothesis (null hypothesis) would be different types of grass do not affect how far a ball rolls
The aim would be to determine the effect of different types of grass on the movement of a ball
The methodology would involve identifying several playing grounds with different grasses and then rolling the ball with a constant force on the different grasses and then determining the eventual speed and distance traveled by the ball on those grasses which would serve as the results. Inferences can then be made from this results and then conclusions drawn subsequently.
Answer:
In metaphase ll, the chromosomes line up in the middle of the cell
Explanation:
You should wear safety goggles, make sure that your equipment is clean, and use the proper amount of chemicals(or other substance) as told
<span>d. Does sugar or salt have a greater effect on plant growth?
This question has measurable outcomes, that can be repeated and tested. </span>
