Can somebody help me with they anwser for lesson 20 unit 4 the human body unit test

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

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

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.