What is the independent variable in this study?
A) Observatory location
B) Carbon dioxide concentration
C) Since this is a manipulative study, there is not an independent variable.
D) Time (year)
Read the following scenario, and answer the questions below.
Pablo and Johanna have to do a yearlong study for their biology course. After some discussion, they decide to propose comparing their dogs and the diet that they feed them to test their hypothesis that the local veterinarian's special dog food mix will enhance growth and development. Each student will adopt a puppy from the local pound. Pablo will feed his shepherd-mix dog the special diet of wet and dry foods from the local vet, while Johanna will use generic dry kibble from the supermarket for her bulldog.
D
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The tropical rainforest terrestrial ecosystem has been disturbed by human activity more than any other
Indicate whether the statement is true or false
The sinking air in an anticyclone
A) causes instability. B) leads to widespread precipitation. C) increases in relative humidity as it sinks. D) warms adiabatically. E) all of the above
The amount of water associated with the wilting point in clay is ________ than that for sand and silt
A) greater B) less C) approximately the same
What country contains the highest concentration of endangered animals?
A. Mexico B. United States of America C. Costa Rica D. Trinidad and Tobago E. Tanzania