Answer:
54
Explanation:
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The body of water experiences eutrophication.
The process of eutrophication takes place primarily in ecosystems with gradual changing waters, mainly in deep lakes. In the depths of the lake, where deposition of dead algae takes place, the aerobic bacteria, which feeds on them proliferate that in turn consumes more amount of oxygen.
Though in the absence of enough circulation of water that is usually found in the case of deep lakes, the bottom of the lake is poorly oxygenated and the bacteria eventually deplete the oxygen found in the deep layers of water. Thus, they can no longer degrade all the dead organic matter and gets accumulated in the sediments. The lake is now considered to be aging.
Answer:
<em>T</em><em>he </em><em>four </em><em>Inner</em><em> </em><em>planets</em><em> </em><em>have </em><em>slower </em><em>orbits,</em><em> </em><em>s</em><em>l</em><em>o</em><em>wer </em><em>pin,</em><em> </em><em>no </em><em>r</em><em>ings </em><em>and </em><em>they </em><em>are </em><em>made </em><em>of </em><em>rock </em><em>an</em><em>d</em><em> </em><em>metal.</em><em> </em><em>The </em><em>four </em><em>Outer </em><em>planets</em><em> </em><em>have </em><em>faster </em><em>orbits</em><em> </em><em>and </em><em>spins,</em><em> </em><em>a </em><em>composition</em><em> </em><em>of </em><em> </em><em>gases </em><em>and </em><em>liquids,</em><em> </em><em>numerous</em><em> </em><em>moons,</em><em> </em><em>and </em><em>rings.</em>
<em>The</em><em> </em><em>Outer </em><em>planets</em><em> </em><em>are </em><em>made </em><em>of </em><em>hydrogen</em><em> </em><em>and </em><em>helium</em><em>,</em><em> </em><em>so </em><em>they </em><em>are </em><em>called </em><em>gas </em><em>giants</em><em>.</em>
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<em>#</em><em>b</em><em>r</em><em>a</em><em>i</em><em>n</em><em>l</em><em>y</em><em>.</em><em>c</em><em>o</em><em>m</em>
Oxygen is an abiotic factor that is beneficial by-product of primary production.
<u>Explanation:</u>
The non living parts of an ecosystem that mainly affects the living organisms in it are called as an abiotic factor. These can include soil, temperature, water, oxygen and sunlight. The major energy source in earth is Oxygen which is abiotic factor.
It is very essential for the photosynthesis process to take place. Here, the plants converts water and carbon dioxide into oxygen and sugar. This becomes food for plants. Then these plants are eaten by animals. Thus oxygen is an important and beneficial by-product of photosynthesis. Oxygen is also very important for the survival of human beings.
