« previous next »

Author Question: The oxygen revolution changed Earth's environment dramatically. Which of the fol (Read 640 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 12, 2013
The oxygen revolution changed Earth's environment dramatically. Which of the following took advantage of the presence of free oxygen in the oceans and atmosphere?
A) the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules
B) the persistence of some animal groups in anaerobic habitats
C) the evolution of photosynthetic pigments that protected early algae from the corrosive effects of oxygen
D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria
E) the evolution of multicellular eukaryotic colonies from communities of prokaryotes


Millan

  • Sr. Member
  • ****
  • Posts: 368
Reply #1 on: Jul 13, 2013
Answer:  A


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?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

The geological timescale and an overview of the history of life on Earth The geological timescale and an overview of the history of life on Earth
Rivers on Mars and Earth Rivers on Mars and Earth
Industrial Waste and the Impact on the Environment Industrial Waste and the Impact on the Environment
Earth Atmosphere Earth Atmosphere
Legal Environment of Business: Online Commerce, Ethics, and Global Issues (Cheeseman) Legal Environment of Business: Online Commerce, Ethics, and Global Issues (Cheeseman)
Earth 340 Million Years Ago Earth 340 Million Years Ago
Video: Wound Cultures

For a complete list of videos, visit our video library