Zonation within a community is typically the result of differences in the
A) patterns of predation among species within a community.
B) rates of reproduction among species within a community.
C) patterns of competition among species within a community.
D) physical characteristics of the environment across a spatial gradient.
D
You might also like to view...
The sequence of genes in each T4 virus within a population is the same but starts with a different gene at the 5' end. If each of these linear pieces is circularized, the gene sequences would be identical. The T4 DNA, therefore, is described as being
A. a linear repeat. B. circularly permuted. C. linearly palindromic. D. two fold rotationally symmetrical.
Chlamydia trachomatis causes
A. gonococcal urethritis. B. trachoma. C. dental caries. D. trachoma and nongonococcal urethritis.
Kinetic organisms can move themselves by all except:
a. flagella. b. jet propulsion. c. undulation of the body. d. using turbulent mixing.
During which phase does a nuclear membrane form around each of the two nuclei?
a. prophase b. metaphase c. anaphase d. telophase e. cytokinesis