« previous next »

Author Question: Fossilized stromatolites A) all date from 2.7 billion years ago. B) formed aroun (Read 692 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 12, 2013
Fossilized stromatolites
A) all date from 2.7 billion years ago.
B) formed around deep-sea vents.
C) resemble structures formed by bacterial communities that are found today in some warm, shallow, salty bays.
D) provide evidence that plants moved onto land in the company of fungi around 500 million years ago.
E) contain the first undisputed fossils of eukaryotes and date from 2.1 billion years ago.


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 13, 2013
I know it's C, we did this last week ;)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

penguins

  • Hero Member
  • *****
  • Posts: 903
Reply #2 on: Jul 18, 2013
Thank you, thank you!!


« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

A Golden Retriever at 12 years old A Golden Retriever at 12 years old
Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is rough
(a) The relative age ranges of different dating techniques depend upon the half-life of the system u (a) The relative age ranges of different dating techniques depend upon the half-life of the system u
Preschool: 3–6 years. Preschool: 3–6 years.
Prevalence of lifetime mood disorders for Canadian men and women age 55 years and over Prevalence of lifetime mood disorders for Canadian men and women age 55 years and over
Earth 340 Million Years Ago Earth 340 Million Years Ago
Video: Coronary Heart Disease

For a complete list of videos, visit our video library