which of the following statements about algal bloom and eutrophication is true? 1. Eutrophication is typically caused by the removal of nitrogen and/or phosphorus 2. algal blooms cannot produce toxic substances that threaten drinking water 3. when algae in an algal bloom die, decomposition produces excess oxygen, which can kill fish 4. algae populations grow when limiting nutrients become more available

which of the following statements about algal bloom and eutrophication is true? 1. Eutrophication is typically caused by the removal of nitrogen and/or phosphorus 2. algal blooms cannot produce toxic substances that threaten drinking water 3. when algae in an algal bloom die, decomposition produces excess oxygen, which can kill fish 4. algae populations grow when limiting nutrients become more available

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter46: Ecosystems

Section: Chapter Questions

Problem 3VCQ: Figure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification...

See similar textbooks

Similar questions

State whether the following is True or False of the process of eutrophication from the overuse of fertilizers. Group of answer choices Eutrophication often starts with stimulating algal growth [ Choose ] TRUE FALSE Eutrophication results in loss of dissolved oxygen from the process of photosynthesis [ Choose ] TRUE FALSE It is the decomposition of algae after algal blooms that lead to bacterial growth causing a loss of oxygen [ Choose ] TRUE FALSE Eutrophication is a natural process and can occur in the absence of fertilizers [ Choose ] TRUE FALSE
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…
a. What eventually happens to the nutrients that run off into theocean with sewage and other effluents?b. Why can high mountain communities usually dispense with watertreatment?
Marine debris is accumulating in regions of the ocean where major currents converge. The presence of plastics and other trash are negatively affecting ocean ecosystems.What would contribute to this negative effect on ocean ecosystems? 1.Decreasing the overall amount of plastic materials produced2.Increasing the use of nonbiodegradable materials3.Decreasing overall consumption levels4.Increasing the use of biodegradable materials
Figure 46.17 Which of the following statements about the nitrogen cycle is false? Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+). Denitrification by bacteria converts nitrates (NO3-) to nitrogen gas (N2). Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2-). Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
Figure 22.19 Which of the following statements about the nitrogen cycle is false? Nitrogen fixing bacteria exist on the root nodules of legumes and in the soil. Denitrifying bacteria convert nitrates (NO3 ) into nitrogen gas (N2). Ammonification is the process by which ammonium ion (NH4+) is released from decomposing organic compounds. Nitrification is the process by which nitrites (NO2-) are converted to ammonium ion (NH4+).
Figure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+) . b. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2) . c. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2) . d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
Decomposers are associated with which class of food web? grazing detrital inverted aquatic
Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem? biomassification biomagnification bioentropy heterotrophy
Algal blooms occur due to the presence of an excess amount of nutrients, like phosphorus, in fresh water. How does excess phosphorus get into fresh water? The nutrients are a part of the fertilizers that are often washed away into ponds. The nutrients are added to the water by fishermen to feed the fish. The nutrients leak into fresh water from'oil refineries in the vicinity. The nutrients are formed by the decomposition of organic wastes dumped into fresh water. 0 0 0 0
In Eutrophication, excess nutrients can cause algal blooms. However, what happens when the algae eventually die? Bacterial – Increase or decrease Oxygen – Increase or decrease
Which nitrogen flux is incorrectly described? O nitrification is the conversion of ammonium to nitrates nitrogen mineralization is the conversion of organic nitrogen to inorganic nitrogen nitrogen immo bilization is the conversion of ammonium to metamorphic rock O denitrification is the conversion of nitrate to nitrogen gas O nitrogen fixation is the conversion of nitrogen gas to bioavailable forms of nitrogen