Microbial decomposition of organic matter results in NH4+ production through a process called ________
Fill in the blank(s) with correct word
ammonification
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Consider the structure of a trophic pyramid when answering the following questions: Why would the world be better off if all humans were vegetarians?
A. More energy can be obtained as a primary consumer, supporting more primary consumers. B. There are more vitamins in plant tissue than in animal tissue; primary consumers would be healthier. C. Eating vegetables is healthier than eating animals.
Which of the following statements concerning cancer
cells is most accurate? a. Proto-oncogenes are part of the regulatory section of a chromosome. b. Tumor cells have lost their ability to stop dividing. c. Proto-oncogenes help control runaway cell division. d. Benign tumor cells usually spread only to adjacent organs. e. Metastasis is the spread of benign cells.
____________________ result from immunological hypersensitivity to what should be harmless
substances. Fill in the blank(s) with the appropriate word(s).
What is the evidence that exists to support the idea that the greater area of the tropics is the reason for higher diversity?
A) The land mass is greater at the equator than elsewhere on Earth. B) The area of the Atlantic Ocean is greater at the equator. C) There are more mountainous areas in the tropics, creating more surface area. D) The area between 0° and 10° is greater than between 60° and 70° latitude.