What is the next step in this sun life cycle after it has used up its hydrogen fuel a. super giant b. supernova c. nebula d. red giant

The organ that has two atria and one ventricle is the

The english language is part of which language family? a. alatic b. dravidan c. indo-european d. khoisan

The us and canadian governments are doing all of the following to combat environmental problems except a. encouraging the use of public transportation b. enacting clean water policies c. requiring emissions testing d. limiting animal populations in some regions