________ water is a slowly exchanging pool, and once it becomes polluted it is difficult to clean up
Fill in the blank(s) with correct word
Ground
Biology & Microbiology
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As DNA is always double-stranded, RNA is always single-stranded
Indicate whether this statement is true or false.
Biology & Microbiology
Which of the following represents an early
stage in primary succession? a. pine trees b. moss and lichens on bare rock c. weedy annual plants in an open field d. climax species in succession e. alder, cottonwood, and willow thickets
Biology & Microbiology
One of the most important roles of proteoglycans is to trap ________ to form a ________ matrix
Fill in the blank with correct word.
Biology & Microbiology
Which of the following is the correct sequence of blood flow in reptiles and mammals?
Biology & Microbiology