Venous return to the heart is increased during expiration. a. true b. false

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Explain how the political influence of african americans leaders became weaker.

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?