What do the Ediacaran fauna represent, why are they important, and what is their relationship to later
life forms? What will be an ideal response?
The Ediacaran fauna are the first multicelled 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. They may be the ancestors of some Early
Paleozoic organisms, or they may represent an early evolutionary development that died out.
You might also like to view...
List two ways that glacial deposits give strong evidence of the existence of Gondwana. What will be an ideal response?
Which of the following is a good example of a biological agent or action that is a hazard to public health?
A) Rotavirus infections lead to deadly diarrhea in more than a million children each year. B) Chewing tobacco is known to greatly increase the chances of cancer of the mouth and throat. C) For people living deep in a forest, the drought increased the chances of a deadly forest fire. D) The use of air bags and safety belts has greatly reduced accidental deaths in moving vehicles.
Annual temperature ranges are small in tundra climates
Indicate whether the statement is true or false
The atmospheric pressure bands that circle Earth do not change very much with the seasons in the Northern Hemisphere.
Answer the following statement true (T) or false (F)