Answer :
Final answer:
Eutrophication is caused by excess nutrients like nitrogen and phosphorus, leading to algal blooms and oxygen depletion, resulting in the death of fish and other creatures. Nitrification causes eutrophication in the Gulf of Mexico Dead Zone and the Chesapeake Bay. Fertilizer numbers represent the ratios of nitrogen, phosphorus, and potassium. Mutualism, parasitism, and endosymbiosis are different types of symbiotic relationships.
Explanation:
Eutrophication
- Substances that cause eutrophication include excess nutrients, such as nitrogen and phosphorus, typically from human activities like agricultural runoff or sewage discharge.
- The elements specifically causing eutrophication are nitrogen and phosphorus.
- In the Gulf of Mexico Dead Zone, nitrification is caused by excess nitrogen and phosphorus entering the water body. These nutrients promote the growth of algae, which then die and decompose, consuming oxygen and leading to the formation of a dead zone.
- In the Chesapeake Bay, similar to the Gulf of Mexico, excess nutrients from human activities have caused eutrophication, leading to algal blooms and the subsequent depletion of oxygen.
- Annotated diagram:
- Fish and other creatures die during eutrophication events because algal blooms consume oxygen as they decompose, leading to oxygen depletion in the water. Without enough dissolved oxygen, fish and other organisms cannot survive.
- Eutrophication happens more when the sun is out because sunlight provides energy for photosynthesis in algae, allowing them to grow and multiply more rapidly.
- The population that blooms during eutrophication events is algae. The excess nutrients provide favorable conditions for algal growth.
Fertilizer
- The numbers 13-5-7 represent the ratios of nitrogen (N), phosphorus (P), and potassium (K) in the fertilizer. The numbers indicate that the fertilizer contains 13% nitrogen, 5% phosphorus, and 7% potassium.
- The above fertilizer contains 7% potassium.
- Bird guano is a good source of phosphorus (P).
- Organisms that make guano include birds, bats, and seals, among others.
Symbiosis
- Endosymbiosis works to increase the level of nitrogen in the soil through the mutualistic relationship between certain plants and nitrogen-fixing bacteria. The bacteria reside within specialized structures in the plant's roots called nodules and convert atmospheric nitrogen into a usable form for the plants.
- a. Mutualism: Mutualism is a symbiotic relationship where both organisms benefit. An example is the relationship between bees and flowers. Bees collect nectar from flowers and in the process, they transfer pollen, aiding in the plants' reproduction.
- b. Parasitism: Parasitism is a symbiotic relationship where one organism benefits at the expense of the other. An example is a tick feeding on a host, such as a dog. The tick obtains nutrients from the dog's blood while potentially causing harm to the host.
- One example of an endosymbiotic organism inside humans is gut bacteria. These bacteria help with digestion, nutrient absorption, and synthesis of certain vitamins, providing benefits to the human host.
Learn more about Eutrophication and Symbiosis here:
https://brainly.com/question/13232104
Final answer:
Eutrophication is a process where excessive amounts of nitrogen and phosphorus in an ecosystem lead to the rapid growth of algae. This can block sunlight, deplete oxygen, and harm fish and other organisms.
Explanation:
Eutrophication is a process where there is an increase in the concentration of chemical nutrients, particularly nitrogen (N) and phosphorus (P), in an ecosystem. Excessive amounts of N and P from human sources, such as agricultural runoff and sewage, can cause cultural eutrophication. This leads to the rapid growth of algae, which can block sunlight, deplete oxygen, and produce toxins that harm fish and other organisms.
During a eutrophication event, fish and other creatures die because the excessive growth of algae depletes oxygen from the water. Algae blooms occur more frequently when the sun is out because sunlight is a primary source of energy for algae photosynthesis.
The primary organism population that blooms during a eutrophication event is algae. Algae feed on the excess nitrogen and phosphorus, leading to their rapid growth and reproduction.
