"Water quality" may include the amounts of dissolved oxygen
and the levels of algal growth, pollutants which may be present and the pH level. Water quality effects also which types of organisms can
survive in a body of water.
Shellfish require a high level
of dissolved oxygen and their abundance is an indication of good water quality. Shellfish are sensitive to changes in the ecosystem and they cannot easily escape changes in the water quality. These are one of the reasons why shellfish are good indicators of water quality.
From smallest to largest the levels of ecosystem organization are:
Organism
Population
Community
Ecosystem
<span>The concentration of carbon dioxide, water supply, and the temperature are the other factors needed for photosynthesis. Light seems to be a limiting factor, when too low photosynthesis is declined. Given too much though may also slow the rate of photosynthesis due to the bleaching of chlorophyll.</span>
Antagonists muscles (e.g. biceps and triceps brachii)
Explanation:
The heart begins to pump more through outer body parts and skin so that excess heat is lost resulting to sweating
