Which abiotic factor is essential to all aquatic ecosystems excpet the ocean hydrothermal vents, and why?
a. phytoplankton, because it provides a source of food
b. salt, because it provides the necessary environment for organisms to move about
c. deep water, because it provides the necessary environment for organisms to move about
d. Sunlight, because it provides a source of energy***
I commented on your other post, but I guess I'll move here. I think D is right.
it's b
What is it
WHAT ARE ALL THE ANSWERS :C
To determine the correct answer, let's break down the question and analyze each option.
a. Phytoplankton, because it provides a source of food:
Although phytoplankton is indeed important as a food source in aquatic ecosystems, it is not an abiotic factor. Abiotic factors refer to non-living components of an ecosystem.
b. Salt, because it provides the necessary environment for organisms to move about:
While salt is an essential factor in marine ecosystems, it is not present in all aquatic ecosystems. Freshwater ecosystems, such as rivers and lakes, do not contain salt.
c. Deep water, because it provides the necessary environment for organisms to move about:
Although deep water can provide a specific habitat for some aquatic organisms, it is not a universal abiotic factor necessary for all aquatic ecosystems. Shallow water ecosystems also exist where various organisms thrive.
d. Sunlight, because it provides a source of energy:
The correct answer is d. Sunlight is an abiotic factor that is essential to all aquatic ecosystems (excluding ocean hydrothermal vents). Sunlight is crucial for photosynthesis, a process that enables plants and algae to convert sunlight into energy. Many aquatic organisms, including phytoplankton, rely on this energy source. Without sunlight, the production of food and energy in aquatic ecosystems would be significantly limited.
Therefore, the correct answer is d. Sunlight, because it provides a source of energy.