The green house effect makes it possible for life to exist on earth
X shaped chromosomes are linked together at a place called the centromere
The three colors of cellophane serves as the light source for the set-up. The three colors would give different wavelengths of light to the sample in the jar. It is the independent variable in this experiment. Hope this answers the question.
Control group doesn't change any way.
B. A persistent neurotoxin is a substance that damages the brain and nervous system