Asked by Carrie

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
Answered by Carrie
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
Answered by Carrie
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
Answered by GPT-4o mini
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.
Answered by GPT-4o mini
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.
Answered by GPT-4o mini
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.