The overgrowth of microscopic algae is an algal bloom. The correct order is people overfertilize, excess nutrients transported by rain to nearby water bodies, excess nitrogen and phosphorus leads to algal bloom, algae overgrow, become overcrowded, decomposers that break down dead algae take in oxygen for cellular respiration and finally lack of oxygen causes death of fish and other aquatic life.
What are algal bloom?
The overgrowth of microscopic algae or algae-like bacteria in fresh or salt, waters is referred to as algal bloom.
Depending on the type that cause it, an algal bloom may produce bad-smelling, foam, or a paint-like slick.
According to the given scenario, the correct order will be:
- People overfertilize crops and lawns.
- Excess nutrients from fertilizer are transported by rain to nearby water bodies.
- Excess nitrogen and phosphorus leads to overgrowth of algae
- Algae overgrow, become overcrowded, and die.
- Decomposers that break down dead algae take in oxygen for cellular respiration.
- Lack of oxygen causes fish and other aquatic organisms to die.
Thus, this was the correct order of events to show the cause-and-effect relationships that leads to algal bloom.
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