Which class of vertebrates is considered to be the first to develop lungs, allowing them to become terrestrial organisms? a) reptilia b) aves c) mammalia d) amphibia

When should a bar graph be used? a. when there is no independent variable. b. when the independent variable is continuous and does not show a relationship to the dependent variable. c. when the independent variable is continuous and shows a causal link to the dependent variable. d. when the independent variable is composed of categories and does not show a relationship.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Lymphatic vessels remove excess fluid from tissues. often after mammexront( the surgical procedure to remove of all or part of a breast) the lymphatic vessels draining the arm are damaged. explain a consequence of this damage. what can be done to reduce the symptoms?