Which is a characteristic of a decomposition reaction? substance p replaces x in the compound xy. substance xyz breaks down into x, y, and z. substance z burns in the presence of oxygen to form zo. substance x combines with y to form compound xy.\

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Which group is noted for the independence of gametophyte and sporophyte generations from each other? a) ferns b) mosses, hornworts, and liverworts c) charophytes d) angiosperms e) gymnosperms

What element is able to combine with itself and hydrogen to form large molecules ?