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