The theory of continental movement is called ____
a. plate tectonics
b. plate drift
c. seismology
d. fault line movement
e. sea floor spreading
ANSWER: a
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Select the reaction that is most likely to be a tropism.
A. Flowers blooming when it is warm. B. Production of aerenchyma. C. Plants bending away from a heat source. D. Induction of seed dormancy.
How are the extending forelimbs and hind limbs alike?
What will be an ideal response?
Scientists have developed transgenic crops that use genes from other organisms to produce substances that protect them from damage by insect pests or frost. Which type of biotechnology is involved in the production of such crops?
A) genomics B) genetic engineering C) pharmacogenomics D) gene mapping
Demographics include __________ and __________
structure, such as the size of the __________ base. Fill in the blank(s) with the appropriate word(s).