What is the purpose of grid paper in your investigation? (1 point) O to observe how water refracts the light from objects drawn on the grid
O to investigate how changing the incident angle affects refraction
O to take notes on your observations
to investigate how different materials refract light

What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.

your so this is a 4th grade thing how do you not know oh my lord

Explanation:

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

"do a testcross with a homozygous recessive plant."