C. Oil. I would choose that one!
The answer is A. Stressor
Answer:
Refraction:
When ray of light passes through from one medium to another medium ,due to the difference in medium index ,the light deflect from its original path .This deflection of light ray from its path is called refraction.The phenomenon of refraction can also be observed in sound and water waves.
Cornea reflect the light before light reaches to the retina.Cornea is a transparent part and which place in front of the eye.
The irises of cow look brown that is why the eye of cow looks brown.But the irises of man can be different type like brown,green blue etc.
Answer:
DNA
Explanation:
It's the genetic material that writes up who we are.
But if it's discussing an organelle, then it's the nucleus.
Have a great day!
True and False depending on what type of evidence their trying to gather. Hope that helps