What was the effect of volcanoes on the Earths early atmosphere? a) volcanoes released gases to form the atmosphere
b) volcanoes released water vapor
c) volcanoes released gases and water vapor
d) volcanoes changed the landscape

Plants that have reproductive structures called cones are?

Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?