Choose the letter of the best match from the following:A. birth control pillB. intrauterine deviceC. diaphragmD. foams and jelliesE. vasectomySperm blockage.
Fill in the blank(s) with the appropriate word(s).
Answer: C
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Malaria is caused by a parasitic dinoflagellate and is transmitted by the Anopheles mosquito
1.True 2.False
At the bottom of an energy pyramid are the ____
a. primary producers b. secondary producers c. primary consumers d. secondary consumers e. tertiary consumers
Which of the following is created as ions diffuse across membranes?
a. an electrical gradient b. an electrochemical gradient c. a chemical gradient d. a biochemical gradient
The tiny wasp Ooencyrtus kuvanae lays its eggs inside the egg masses of gypsy moths. When the wasp larvae hatch, they burrow into the gypsy moth caterpillars and eat them from the inside
After they have completed their development, the adult wasps emerge from the bodies of the moth caterpillars, killing them in the process. This relationship is classified as A) coevolution. B) competition. C) mutualism. D) predation. E) parasitism.