The best way to increase validity of data in an experiment is by performing the experiment numerous times and obtaining measurements and data upon each run of the experiment.
Im not sure if this will be the answer you teacher is looking for but i think the answer would be
Hair on the head protects scalp from injury and sunlight
Eyelashes and eyebrows protect eyes
Nostril and ear hairs protect from foreign particles
Explanation:
To protect the animals, plants, and more. Without having the habitats they'll die/go extinct. The plants will soon rot/wither away.
Explanation:
Basically, what you need to do is use a term for each one of the circles so it is even and if you look at the explanation(above or below it) it will match the definition of the term you provided. I'm guessing tho.
Answer:
Adirondacks "Missing Time" Formation