Which of the following is not a direct threat to biodiversity in an aquatic ecosystem

a)poisonous chemicals dumped in by factories
b)over fishing
c)global warming
d)oil spills

The correct answer is option C

Global warming is not the direct threat to the aquatic animals as they live in water.

Other source like oil spills, over fishing and poisonous chemicals being dumped into the factories are direct threat to the aquatic animals.

Global warming can be defined as the rise in the global temperature of the atmosphere which is a direct threat to the people and animals living on land.

The high temperature is causing several diseases in the human beings and affecting the population of animals.

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

c.           is the correct answer