Which Best Describes Organisms of the Precambrian Era

Which of the following organisms could have evolved during the Precambrian Era. Members of Domain Eukarya have cells with membrane-bound organelles and members of Domain.

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There is actually a pretty rich history of bacteria and related unicellular organisms within the fossil record.

. Meteorites crashed into the Earths surface. What are the three elements that geologists measure to determine the age of an organisms remains. Which among the following best describes the Cenozoic Era.

What best describes organisms of the Precambrian era. Which example best describes life in the Precambrian era aonly bacteria and algae are alive. Land plants and animals B.

What does Cenozoic mean. Crinoids and gastropods have lived during the same time period. An eon is a unit of geological time and it often refers to a span of one billion years.

Dmarine organisms are dominant small organisms begin to move onto land. Dinosaurs and primitive mammals C. The Precambrian period refers to.

Ferns and flying reptiles. In the precambrian era single celled organisms lived. C first flowering plants appear on land dinosaurs roam the earth.

An era of geological history lasting from 70. Which best describes how ice cores are important to the. The first animal that lived was the bony fish after that was the lung fish which evolved into reptiles In.

The suns light could not reach Earths surface. Cenozoic era the Age of Mammals. Archean eon Cenozoic era Jurassic period Holocene epoch.

Violent thunderstorms and volcanic eruptions rarely occurred. Jellyfish are very old organisms worms moss and various other soft bodied creatures. The Earths atmosphere was rich in oxygen.

His teacher wrote the following statements on the board and asked the students to put them in the correct order to describe how fossils are formed. Single-celled organisms and soft boneless animals D. Carbon-14 nitrogen and carbon-12.

Single-celled organisms are bacteria and other microscopic organisms. Minerals seep into the organisms body and replace it with stone. They developed with time and by the time the Archean period ended ie.

A year later a similar fossil is found in Wyoming that also dates from the early Mesozoic era. Most of the life that existed during the Precambrian Time span were prokaryotic single-celled organisms. Rocks containing fossils of these organisms were carried to other places by ocean currents.

23____Earths first pollution was a. Which conclusion is best supported by the diagram. Which statement best describes dinosaurs.

These two organisms most likely lived in. Every ammonite fossil is older than the gastropod fossils. Precambrian eon Mesozoic era Quaternary period Eocene epoch.

Trilobites and gastropods are the youngest fossils. The Precambrian Period Overview. Which statement best describes the Law of Superposition.

Which method would be BEST for scientists to use to determine the absolute age of a Precambrian igneous rock. Which best describes organisms of the Precambrian era. Out of the choices given the best way to describe the organisms of the Precambrian era are they were single-celled organisms and soft boneless animals.

However together they were mighty. The organism completely decomposes leaving behind an imprint. ____Which statement best describes the Precambrian era.

Eras and periods both appear at the start of the Cambrian period. They formed an organism that was bigger more efficient and able to do much more than any single-celled organism. An organism dies and its body is covered with a layer of sediment.

In fact it is now thought that the first types of unicellular organisms were extremophiles in the Archaean domain. The supercontinent called Pangaea formed during the Permian Period just under 300 million years ago. Ferns and flying reptiles.

During the late Precambrian period the new Earth saw the first multicellular animals like the jellyfish yes. Land plants and animals B. Although extinctions have occurred throughout the history of life an extraordinary number of them occurred in a relatively brief period at the end of the Cretaceous.

The animals in the Precambrian Period were soft bodied animals. And members of Domain Eukarya are usually single-celled organisms. Learn more about the period that occurred 45 billion to 542 million years ago.

Name three major adaptations for life during the late Precambrian. This Era was dominated by single celled organisms. Dinosaurs and primitive mammals C.

Bflowering plants are the dominant plant life humans convert open spaces to farm land. Which best describes eras and periods. Precambrian time covers the vast bulk of the Earths history starting with the planets creation.

Which best describes organisms of the Precambrian era. The earliest evidence for the advent of life includes Precambrian microfossils that resemble algae cysts of flagellates tubes interpreted to be the remains of filamentous organisms and stromatolites sheetlike mats precipitated by communities of microorganisms. One thing from that time that we still have today is the jellyfish.

Single-celled organisms and soft boneless animals D. Also in existence were jellyfish spiders crabs and worms. Ferns have existed for a longer period of time than coral.

The Precambrian Earth Science