« previous next »

Author Question: In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessar (Read 652 times)

Jesse_J

  • Sr. Member
  • ****
  • Posts: 282
on: Jun 13, 2013
In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?
A) autotrophs and heterotrophs
B) producers and primary consumers
C) photosynthesizers
D) autotrophs
E) green plants


aero

  • Hero Member
  • *****
  • Posts: 512
Reply #1 on: Jun 15, 2013
I picked D and I got it right, good luck :)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Jesse_J

  • Sr. Member
  • ****
  • Posts: 282
Reply #2 on: Jun 22, 2013
You were right :D


« previous next »
 

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
Ecosystem Ecosystem
shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae
A blood smear. The smear reveals representative cells from each formed element group: red blood cell A blood smear. The smear reveals representative cells from each formed element group: red blood cell
The planar peptide group The planar peptide group
The ABO blood group antigens The ABO blood group antigens
Video: Corpus Callosum Animation

For a complete list of videos, visit our video library