Question 7 3 pts
Which of these qualities most likely helped Copernicus construct the scientific explanation
of the solar system? (3 points)
O generosity and helpfulness
O kind-heartedness and flexibility
O imagination and creativity
O enthusiasm and good sense of humor
Question 8
3 pts

the sphincter muscles at the end of the digestive tract is the anus.

the answer is :

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.