Answer: B. It disturbs the biotic factors of the estuary floor.
C. It reduces contamination of the water and substrate of the estuary.
Estuary is a partly enclosed water body which receives water from the streams of rivers and sea. An estuary is a wetland where freshwater river streams meets the ocean water. Therefore, estuary exhibit accumulation of brackish water.
Sedimentation of bed of estuary is caused when the rain, rivers and streams wash off the sediments from the land into the estuary. The sedimentation is speed up by the pollutants being discharged by the agricultural and industrial waste. The accumulation of sediments disturbs the aquatic life and if the sedimentation exceeds, the water in the estuary will dry and estuary will be converted into dryland.
The removal of sediments or contaminated substrate from the estuary can disturb the biotic factors as this measure will remove the plants already growing on the substrate. This may kill the aquatic animals as they may also come out of water along with the substrate.
The removal of contaminated substrate will reduce the contamination of the water. This will help in retaining the aesthetic quality of the region as water will appear clear rather dirty. It will also help to maintain the biodiversity of the estuary water as pollution free water will promote the growth of aquatic plants and animals.
Answer:
When first used in medicine in the 1940s, penicillin was uniformly effective in killing the bacterium Staphylococcus aureus. Today, the <u>Darwinian selection</u> has led to an increase in antibiotic-resistant alleles, and humans are increasingly at risk from untreatable Staphylococcus aureus infections.
Explanation:
Those bacterias which were affected by the penicillin were filtered off from the environment since the offspring of those susceptible bacterias were decrease by time until total extinction.
But by the natural mutation of bacterias, some bacterias can originate a offspring of bacterias which were capable of resist the action of an antibiotic. Those genes could also be carried out by a plasmid conjugation creating new colonies which are resistant to the penicillin.
Answer:
The addition of food increases the lives of the bunny as food sustains life and brings about nourishment.
Hello There!
The statement above is not true, therefore making your answer B. False.
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- Hannah ❤
