Humans can negatively alter ecosystems by which of the following ways? Select two correct answers.
planting trees
hunting an overcrowding population of deer
destroying habitats for crop production
releasing wastes and chemicals
introducing a controlled non-native plant that prevents erosion
limiting the amount of construction in an area
Nitrogen is a limiting factor in many ecosystems because of
What is burning fossil fuels not blamed for?
global warming
adding acid to soil, water, and air
disrupting the carbon cycle
disrupting the nitrogen cycle
What would most concern someone concerned with long-term damage to the environment?
1
2
3
4
5
6
