What do the edaphosaurus use their back sail for?

1.3.3 quiz: primary and secondary sourcesquestion 4 of 102 pointsa secondary source is reliable and credible if the person who created thesource is an expert on the topic, is educated and respected in the field ofstudy, and:

Surfaces of paintings—such as paper, canvas, and pottery—are referred to technically as

Each of the letters on the map above marks a body of water in southeast asia. which two letters represent gulfs