At a global scale, harmful algal blooms (HABS) are appearing in many places, often new places, and lasting longer than previously recorded. Across Florida, the occurrence of algal blooms, caused by various species of phytoplankton, has been intensifying. In the summer of 2016, a state of emergency was declared because a toxic cyanobacterial bloom occurred in Lake Okeechobee which spread into and throughout the St. Lucie River and Estuary. Water samples collected during the bloom helped identify a limiting nutrient. 1. Data from a Burger et al. (2004) indicate that mercury levels in Florida gar, top-level predators, from Lake Okeechobee were not higher than mercury levels of fish muscle from other locations in the United States. However, mercury levels in the livers of Florida gar were above the level considered safe for human consumption. a. Explain why this is good news for people who fish in Lake Okeechobee. b. Explain why this is bad news for non-human consumers of fish, and how it might be bad news for the ecosystem as a whole.

The following are actual mutualistic partnerships that involve a protist and a host organism; which is the exception? Trichomonas and humans Cellulose-digesting gut protists and wood-eating termites Protists living in hypersaline /anoxic waters always associated with bacteria Algae and certain foraminiferans Photosynthetic dinoflagellates and reef-building coral animals

what are examples of zoonotic diseases in our region and what should be done to mitigate resulting impacts to environmental health from the example of zoonotic disease

Quèstion 66 Which type of organism is more likely to be removed from one species by another species? hemiparasite mesoparasite ectoparasite endoparasite

How are diatoms and dinoflagellates used in monitoring water quality? Cite two (2) examples.  What are zooxanthellae? Describe their role in symbiotic relationships.

1.) Algae and fungi have a symbiotic association in lichen. A controversy exists over the type of symbiotic association occurring in lichens. While some researchers are of the view that the association is a type of parasitism, most researchers believe that the symbiotic association between algae and fungi in lichen is A.) ammensalism B.) mutualism C.) neutralism D.) commensalism 2.) Which of the following statements about intraspecific competition is not correct? A.)Intraspecific competition exists between members of the same species. B.)Species members compete for food. C.) Species members compete for space. D.) Species members do not compete for the opportunity to breed. 3.) Population 1. Randomly mating population with immigration and emigration Population 2. Large breeding population without mutation and natural selection Population 3. Small breeding population without immigration and emigration Population 4. Randomly mating population with mutation and emigration Which of the…

Discuss why cholera epidemics often occur in places with lacking or poor water infrastructure

Considering both habitat conditions and requirements for successful symbiosis, why should you be surprised that squid and the rumen of a cow have the exact same microbial symbiots?

Explain why the diseases malaria, leishmaniasis, andtrypanosomiasis are primarily diseases of tropical regions.

Three mushroom-forming species are adapted to live in the desert. How are desert mushrooms adapted to desert life? Please select all correct answers.  a.) By dispersing their spores all at once b.) Caps stay closed to conserve water c.) They only grow underground d.) They release spores continually for days or weeks e.) By digesting dead organic matter.