In a manipulative experiment ________
A) replication of the experiment is not necessary
B) researchers manipulate as many variables as possible
C) a scientist has been caught manipulating the data for economic gain
D) researchers manipulate the independent variable
E) the peer review process is bypassed
Answer: D
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________ is the study of controls over the distribution and abundance of living things
Fill in the blank(s) with correct word
A trophic cascade is the effect of the loss of ________ on ________
A) producers; the abundance of primary consumers B) detritivores; the abundance of decomposers C) top consumers; the abundance of lower consumers and producers D) top consumers; one another E) flooding; terrestrial ecosystems
Geography knowledge enables people to understand the relationships among people, places, and environments over time. This statement best describes which of the following six essential elements of geography as outlined by the National Geographic Society
a. The World in Spatial Terms b. Human Systems c. Environment and Society d. Physical Systems e. Uses of Geography
When geologists conclude that the Grand Canyon sequence of rocks was formed through hundreds of millions of years of deposition, mountain building, and erosion, they are basing this conclusion on the principle of ________ which states that ________
A) uniformitarianism; the geologic processes that operated in the past are the same as those that operate today, and they occurred in accordance with the same laws of nature that are operating today B) catastrophism; most rock formations were created as a result of supernatural processes C) uniformitarianism; all geologic processes take immense amounts of time to occur and always occur at the same rate D) catastrophism; a single, large flood was responsible for the creation of the rock sequence