I did a project on how the heart works earlier this year, I don't remember much of it, but I think atria is your answer.
Answer from: Quest
a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.
Answer from: Quest
The answer is going to be a because ik that i’m right
The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation