The parachute was invented 4,000 yrs ago! :)
A single undifferentiated cell. For example, in human, this was the embryo.
1. right atrium
2. aortic valve
im not sure if that is the answer
thats what i got
<span>pH is the measure of acidity/alkalinity of a substance. A pH of 7 is considered is neutral. Less than 7 is the acidic pH, with 1 being most acidic. Thus a vegetable with a pH of 5.3 is slightly acidic. A ph of 4.6-6.9 are called as low acidic foods. Thus, the vegetable is low-acidic.</span>
For this information to be true, that would mean freckles is a dominant trait, and to not have freckles is a recessive trait. So that means if even someone's genotype has both the freckle and the no freckle gene, their phenotype will be freckles.