I'll give you brainliest if you answer both questions correctly pollution can lead to harmful algal blooms in waters off the coasts of southeastern u. s. states. which problems are associated with harmful algal blooms? a) increases in the severity and frequency of hurricanes b) poisoning of seafood and collapse of commercial fisheries c) contamination of beaches and sea vessels with pollutants d) decreases in the levels of photosynthesis occurring in ocean waters humans do many things to impact the world around us. some of these will have a positive impact on the environment, while others will not. an example of the negative impact humans could have on an ocean ecosystem would be a) dumping garbage in the bay. b) conserving the local coastline. c) swimming without a life-jacket. d) bird-watching in a nearby marsh.