A network of interactions that involves the
cycling of materials and the flow of energy
among organisms and their physical
environment is
a. a population.
b. a community.
c. an ecosystem.
d. the biosphere.
e. the habitat
C
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Which model would predict the abrupt appearance of a new species in the fossil record, with little or
no evidence of intermediate forms? a. anagenesis b. gradualism c. microevolution d. paedomorphosis e. punctuated equilibriu
Which of the following groups do not contain any species that are autotrophs?
A. Archaea B. Bacteria C. Plants D. Fungi E. Protista
Which of the following would be true for DNA molecule?
A. A+C+G= T B. A+C=G+T C. A= C+T D. A=T and C=G E. A+T = C + G
Movement of molecules down their concentration gradient can drive the movement of a different molecule against its concentration gradient.
Answer the following statement true (T) or false (F)