GEOLOGY

EARTH SCIENCE

FOSSILS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Fossils of organism like ____ reveal that Earth was ____ at during a certain time on the geologic time scale.
A
Trilobites; cold
B
Petrified wood; humid
C
Woolly mammoths; cold
D
None of the above
Explanation: 

Detailed explanation-1: -Mammoths lived during the Pleistocene Epoch, which lasted from about 2.6 million to 11, 500 years ago. All species are now extinct. The earliest known contact between people and mammoths in the Central Plains occurred about 13, 000 years ago.

Detailed explanation-2: -The first life forms were single-celled organisms similar to bacteria. Most of the life forms on Earth today are still prokaryotes-small, relatively simple single-CElled organisms.

Detailed explanation-3: -The oldest is the Paleozoic Era, which means “ancient life.” Fossils from the Paleozoic Era include animals and plants that are entirely extinct (e.g., trilobites) or are rare (e.g., brachiopods) in the modern world.

Detailed explanation-4: -Mammoth fossils have been found throughout the Bay Area and throughout North America. There are two kinds of mammoths. Columbian mammoths, like Lupe, are found in the United States and Mexico. Woolly mammoths are found in Canada.

There is 1 question to complete.