The correct response is decreased oxygen in the water. Algae blooms can lead to hypoxic conditions (low oxygen levels) in the water, which can be harmful or lethal to marine life, disrupting the ecosystem.
What effect do algae blooms have on ocean ecosystems?(1 point)
Responses
increased fish population
increased fish population
decreased carbon dioxide in the water
decreased carbon dioxide in the water
decreased oxygen in the water
decreased oxygen in the water
increased underwater plant population
5 answers
Which of the following do researchers think is a primary factor in the decrease of North American bird populations?(1 point)
Responses
Decreased hunting of predator species
Decreased hunting of predator species
Changes in farming practices such as draining wetlands and pesticide use
Changes in farming practices such as draining wetlands and pesticide use
Recreational hunting of bird species such as waterfowl
Recreational hunting of bird species such as waterfowl
A decrease in conservation efforts
Responses
Decreased hunting of predator species
Decreased hunting of predator species
Changes in farming practices such as draining wetlands and pesticide use
Changes in farming practices such as draining wetlands and pesticide use
Recreational hunting of bird species such as waterfowl
Recreational hunting of bird species such as waterfowl
A decrease in conservation efforts
The correct response is Changes in farming practices such as draining wetlands and pesticide use. Researchers believe that habitat loss and changes in land use, including the use of pesticides, have significantly contributed to the decline in North American bird populations.
Jellyfish compete with anchovies for plankton and are preyed upon by tuna and swordfish. Which change might benefit jellyfish?(1 point)
Responses
increase in anchovies
increase in anchovies
increase in swordfish
increase in swordfish
increase in plankton
increase in plankton
increase in tuna
Responses
increase in anchovies
increase in anchovies
increase in swordfish
increase in swordfish
increase in plankton
increase in plankton
increase in tuna
The correct response is increase in plankton. An increase in plankton would provide more food for jellyfish, potentially leading to an increase in their population.