Answer:
C. The pond experienced an algae bloom.
Explanation:
From the graph we see that the fish population continue to decrease with time. As time passed on, the fish population keeps suffering a decline. In retrospect, the population of the algae continued to increase.
- We can ascribe this to the pond experiencing an algae bloom.
- It could be due to condition called eutrophication.
- When nutrients become very much in water and more algae is produced.
- This leads to dissolve oxygen amount reducing in the water body.
- Therefore, fishes will die off.
It was also found that an increase in testosterone during the PASP predicted subsequent willingness to choose competitive tasks (3, 28, 29). ... Aggression research in human studies has revealed an interesting property of testosterone dynamics, its rapid fluctuations provoking reactive aggression in response to stimuli.
Directional selection is a type of natural selection that favors one extreme phenotype over the mean or another extreme. Examples of directional selection include giraffes that have long necks and the darkening of London's peppered moths after the Industrial Revolution.
Stabilizing selection, also known as purifying selection, is a type of natural selection in which genetic diversity decreases as the population stabilizes on a particular trait value. An example of stabilizing selection is birth weigh in humans.
Disruptive selection is a type of natural selection that shows a preference toward the reproduction of genetic material at the extremes within a population.One of the most studied examples of disruptive selection is the case of London's peppered moths.
From Wikipedia
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The answer is C. The phenomena occur in plant leaves and help water transportation in xylem tissues is photosynthesis and transpiration. A balance between these two phenomena is important to maintain balance in the plant's life.
