4. To be considered a fossil an
organism must have lived only during a short
part of Earth's history; many fossils of the
organism must be found in rock layers; the
fossil must be found over a wide area of
Earth; the organism must be unique.

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

What is one energy transformation that is taking place in the photo? radiant energy to thermal energy thermal energy to nuclear energy chemical energy to thermal energy radiant energy to chemical energy