What are the three animal phyla that dominate animal life on land?
A. Cnidaria, Mollusca, Platyhelminthes
B. Nematoda, Chordata, Cnidaria
C. Platyhelminthes, Nematoda, Arthropoda
D. Mollusca, Arthropoda, Chordata
E. Porifera, Arthropoda, Nematoda
Answer: D
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What is the evidence that differentiation produces specialized cells without the loss of genes?
What will be an ideal response?
The fact that the earth does not go up in flames
in spite of the richness of oxygen in our environment is related to which of the following concepts?
a. the activation energy needed to break bonds. b. the fact that reactants always have less energy than products. c. the first law of thermodynmics. d. the second law of thermodynamics. e. the abundance of water in our atmosphere which inhibits combustion
The greatest number of antimicrobic allergies is reported for what drug?
A) Tetracycline B) Quinolones C) Penicillins D) Pyrantel
Even though in a similar habitat, a founder population that breaks away from the parent population may become very different because of:
A) mutation. B) genetic drift. C) the bottleneck effect. D) natural selection.