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The first vascular plants occurred in the fossil record about _________ years ago.
Q15: In the fern life cycle,the haploid stage
Q15: Discuss the difference between home range and
Q21: To what class does the eastern gray
Q24: Which of these animals does not have
Q25: In humans,germ-line cells are located in<br>A) the
Q25: In eukaryotes,most of the protein-encoding information exists
Q32: The milk-producing glands of mammals are called
Q35: An _ is composed of several different
Q46: Plants are the _ in the food
Q68: Monotremes,marsupials,and _ mammals are the three main