Forests are generally regarded as CO2 ________.
A. sources
B. sinks
C. both a source and a sink
D. None of the choices are correct.
Answer: B
You might also like to view...
The highest magnification generally used to study
cells is provided by the a. transmission electron microscope. b. compound light microscope. c. phase contrast microscope. d. scanning electron microscope. e. Nomarski process light microscope.
The process of aging is described by the term
a. senescence. b. puberty. c. neonate. d. morulation. e. fetalism.
An example of an integrator in maintaining homeostasis is the ________ .
a. glands b. brain c. skin d. muscles e. ears
Which of the following stages occurs immediately after the development of the zygote?
A. the development of the proembryo B. the heart stage when the cotyledon develops C. the development of globular stage D. the torpedo stage embryo forms