Which of the following matches a human action with its impact? (6 points) construction of bridges : water pollution construction of dams : decrease in carbon dioxide level use of fertilizers : increase in population of aquatic animals decrease in honeybee population : increase in plant population

Construction of bridges : Water pollution

Explanation: Bridges are built over water, correct? So you can only assume that debris is going into the water when being constructed.

Also, you can terminate the other answers immediately

1. Decrease in honeybee population : Increase in plant population

That would decrease the plant population because honeybees are needed in order for plants to survive.

2. Use of fertilizers : Increase in population of aquatic animals

This would decrease the population of aquatic animals because fertilizers are toxic, and runoff from farms can go into water and harm aquatic animals.

3. Construction of dams : Decrease in carbon dioxide level

Construction of dams don't decrease carbon dioxide levels. If anything, it'd cause pollution.  

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.