What do the Ediacaran fauna represent, and why are they important?
The Ediacaran fauna represent the first multi-celled organisms found in the fossil record. They are important because they represent a transition faunal assemblage between generally life-poor Proterozoic and the Paleozoic with its sudden appearance of many life forms.
Environmental & Atmospheric Sciences
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What marks the submerged limit of rapid marine erosion?
a. Sea cliffs b. Wave-cut platforms c. Sea caves d. Blowholes e. Berms
Environmental & Atmospheric Sciences
El Niño causes:
A) excess rain. B) decreased evaporation. C) increased strength of the trade winds. D) both B and C.
Environmental & Atmospheric Sciences
The majority of Earth's crust is composed of ________ rock
A) igneous B) metamorphic C) sedimentary D) carbonate
Environmental & Atmospheric Sciences
A(n) ________ is a common boundary where different parts of a system interact
A) sphere B) interface C) delineation D) geosphere
Environmental & Atmospheric Sciences