Complete question, Answer, and Explanation:
You will find the complete question, answer, and explanation in the attached files, due to technical problems.
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Homologous stuctures because, homo means same implying that the cell/animal is not change as it continues to reproduce
The changes will occur in an aquatic ecosystem as a result of nutrient loading are: changes in natural flow regimes as a result of water extraction and supply direct modification or destruction of important habitats barriers to the movement of plants and animals. For example within rivers and between rivers and their floodplain effects of poor water quality competition from introduced, <span>exotic animal and plant species. </span>
Bacteria mostly act as "Decomposer" 'cause they decompose the dead & decaying matter, back into inorganic materials.
Hope this helps!
