Approximately 3.85 billion years ago, a group of single-celled microorganisms known as ________ were alive, reproducing, and evolving.
A. fungi
B. bacteria
C. archea
D. flora
Answer: C
Environmental & Atmospheric Sciences
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A localized zone of melting (commonly thought to be stationary) below the lithosphere is called a(n) ____
a. orogeny b. hot spot c. lava flow d. chert e. graywacke
Environmental & Atmospheric Sciences
Which model of convection describes how the interior is divided into several levels of convection cells?
A) Layer cake model B) Whole-mantle convection C) Plume model D) Differentiation model
Environmental & Atmospheric Sciences
The upper layer of an aquatic ecosystem where sunlight penetrates is termed the euphotic zone.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
Resource Partitioning
What will be an ideal response?
Environmental & Atmospheric Sciences