Answer: increased algal blooms on an ecosystem, causes a NEGATIVE effect to the organisms of the system.
Step-by-step explanation:
Algal blooms occurs when algae, a microscopic algae- like photosynthetic organism, over grows in fresh, salt or brackish waters. The over growth of these algae can occur due to climatic changes, naturally or as a result of human activities.
When it over grows in an area, it can cause the following NEGATIVE effects to the ecosystem which includes:
- it can reduce the oxygen content of the water body thereby harming the fish and other aquatic organisms.
- some of the algae releases toxins into the water body making it unfit for a source of water for drinking,
- the toxins can also work their way through the food web impacting mammals, birds and other wildlife that feeds on glasses shellfish or fish tinted with the toxins. I hope this helps, thanks!