Homeowners living in a heavily forested region surrounding a small 3-acre pond in Missouri decided to reduce air pollution in their neighborhood.
In the fall, after the oak and maple leaves had fallen, the homeowners blew all of the dead leaves into the pond. About 8 months later, in July, they noticed a large number of dead fish in the pond. What is the most likely cause of the fish kill? A) The dead leaves released poisons that killed the fish
B) The bacteria decomposing the leaves depleted the levels of oxygen
C) Bacteria fed on the leaves and then the bacteria infected the fish
D) Carbon dioxide from the decaying leaves reached toxic levels and killed the fish
Question 2
Projections for future population growth in a country include assumptions about
A) fertility and migration.
B) mortality and fertility.
C) migration and mortality.
D) mortality, migration, and fertility.
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