9. What happens when most chemical changes take place a. Only the form of the matter changes.
b. The mass of the matter increases.
c. There is no change in heat.
d. Heat is liberated or absorbed.

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical?

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment