Respiratory and circulatory systems work hand in hand to expel wastes. respiratory system removes CO2 and the circulatory uses the blood as a medium to move excess salts and water from source to sink.
<span>If the black horse is homozygous, what is its genotype?
BB
If the black horse is heterozygous, what is its genotype?
Bb
Hope this helps!
-Payshence xoxo</span>
Yes they do just like we do
