John and Pat are identical twins with identical DNA. John works in a movie theater, and Pat works as a lifeguard. They have very different skin pigmentation. Which is the best explanation of the difference? Skin color, a polygenic trait, is also determined by environmental factors.
Skin color, a polygenic trait, is also determined by the sex of the individual.
Skin color, a trait that demonstrates incomplete dominance, is also determined by environmental factors.
Skin color, a trait that demonstrates incomplete dominance, is also determined by the sex of the individual.

1.the evidene of the reaction

2.yes

3.yes

your answer is "the 1950's"

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.