Lichens and eastern white pine are examples of __________ species because they are extremely sensitive to certain air pollutants.
Fill in the blank(s) with the appropriate word(s).
Indicator
You might also like to view...
Which of the following gymnosperms undergoes double fertilization?
A. angiosperms, not gymnosperms, demonstrate double fertilization B. cycads C. gnetophytes D. epiphytes E. ginkgos
Public health surveillance is the proactive evaluation of
A. emerging infectious agents. B. environmental conditions. C. human behaviors and lifestyle choices. D. genetic background. E. All of the choices are correct.
An ecologist measured the length and weight of different individuals of a species of bird. The most common method of graphically displaying the data is a
A) frequency distribution. B) histogram. C) pie chart. D) scatter plot.
Imagine an insect that is making its way from the outside of a tree to the inside of the tree. Put the layers that it would it encounter in order, starting with the outermost later.____primary xylem and pith____cork cambium____remains of primary and older secondary phloem____cork____secondary xylem
What will be an ideal response?