Which of the following examples indicates the level of the best method for protecting biodiversity in the species-rich regions referred to as hot spots?
a. Individual elephants in the savanna
b. All of the populations of all species in the savanna
c. The entire population of elephants in the savanna
d. The populations of all species and the abiotic components of the environment in the savanna.
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Electroreceptors ____
a. are only used by fishes for navigational purposes b. can be used for communication between primates c. can receive, but not produce, electrical signals d. generate electrical fields within special electric organs in some invertebrates e. function in communication, navigation, and hunting
Carbon dioxide and ________ are the major gases in the atmosphere that absorb energy from the sun
Fill in the blank(s) with correct word
In a healthy female, how many secondary oocytes would be expected to form from 100 primary oocytes? How many first polar bodies would be expected from 100 primary oocytes?
A) 200; 50 B) 100; 50 C) 100; 100 D) 50; 50 E) 200; 200
In an ecosystem
A. both energy and nutrients flow. B. energy is contained with nutrient cycles. C. energy cycles and nutrients flow. D. energy flows and nutrients cycle. E. both energy and nutrients cycle.