The upper boundary of the aphotic zone is determined by the depth of solar light penetration.
Answer the following statement true (T) or false (F)
True
Environmental & Atmospheric Sciences
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Ice cores, such as the Vostok ice core, can be used to reconstruct temperature patterns indirectly, using ________.
A. oxygen isotopes of water in ice B. methane concentrations in gas bubbles C. dust content in ice D. carbon dioxide concentration in gas bubbles E. mercury concentrations in ice
Environmental & Atmospheric Sciences
What does the fossil charcoal record tell us about atmospheric O2 levels?
What will be an ideal response?
Environmental & Atmospheric Sciences
List and briefly describe the components of the energy budget
What will be an ideal response?
Environmental & Atmospheric Sciences
Salmon populations in the Columbia River have increased by 35% since the dam system was put in place.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences