________ is (are) responsible for placing oxygen in the atmosphere
What will be an ideal response?
Answer: Photosynthetic plants
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Which environments is least likely to deposit sand
a) sand dunes along a beach or in a desert b) channel of a meandering river c) beach along and ocean or lake d) delta along an ocean or lake e) open ocean away from land
The dimly lit zone in which zooplankton and smaller fishes predominate is the ____.
A. abyssal zone B. euphotic zone C. estuary zone D. bathyal zone E. benthic zone
Stream discharge is determined by stream velocity per unit of time in relation to_____
a. stream load b. channel cross section area c. stream capacity d. channel roughness e. stream competence
Köppen's climate classification includes ________ major climate groups designated by capital letters
A) two B) four C) six D) eight E) ten