What is an effect of using chemical fertilizers to replace minerals in the soil?
Group of answer choices

they cause harmful algal blooms and eutrophication

they improve the structure of the soil allowing it to retain nutrients

many trace elements are replaced in the soil to help retain water

they break down toxic substances and harmful excess salts

The graph shows the North Atlantic Cod population from 1988 to 1998.

Between 1988 and 1995, the North Atlantic Cod population collapsed due to overharvesting. What do you think the government did to help the population begin to grow again in 1996?increased cod fishing in some areas

set limits on cod fishing

allow unlimited fishing of cod

ordered people to stop eating cod

Most of Earth's freshwater is
Group of answer choices

stored in large underground rock structures

held in reservoirs behind large dams

suspended in atmospheric cloud formations

solidified at the North and South Poles

Where do MOST human inputs of outdoor air pollutants occur?
Group of answer choices

in the mountains

in urban areas

in the deserts

along the oceans

Sustainable forestry is important to maintaining our forest resources. Which of these would NOT be a sustainable practice in forestry?
Group of answer choices

using uneven-aged management

using nonnative trees to replace native trees

reusing wood from deconstructed houses to create furniture

harvesting and then replanting trees