Question

human impact is the effect of humans activities on the environment.

1. list 2 trade - offs (disadvantages) to building new construction in a community.

1.
2.

1. how can living indicators (like macroinvertebrates in a river) give you information about the quality of water?

Explanation:

Question 2

To identify trade - offs of new construction, we consider environmental, social, and infrastructural impacts.

1. Loss of green spaces: New construction often requires clearing land, which means destroying parks, forests, or other natural areas. These green spaces are important for biodiversity (providing habitats for plants and animals), improving air quality (through photosynthesis), and offering recreational areas for the community.
2. Increased traffic and congestion: New buildings, especially residential or commercial ones, bring in more people. This leads to a higher number of vehicles on the roads, causing longer commute times, more air pollution from vehicle emissions, and increased wear - and - tear on the local road infrastructure.

Living indicators like macroinvertebrates are used to assess water quality because different species have different tolerances to pollution.

• Pollution - sensitive species: Some macroinvertebrates, such as mayfly nymphs, require clean, well - oxygenated water with low levels of pollutants. If these species are present in a river, it is a good sign that the water quality is high.
• Pollution - tolerant species: On the other hand, species like leeches or certain types of worms can survive in water with higher levels of pollution (such as organic waste or chemical contaminants) and lower oxygen levels. If a river has a high population of these pollution - tolerant species and a low population of pollution - sensitive ones, it indicates that the water quality is poor. By studying the types and abundances of macroinvertebrates in a river, we can infer the overall water quality, including the level of pollution, oxygen content, and the presence of contaminants.

Answer:

1. Loss of green spaces (destruction of natural habitats, reduction in recreational areas, negative impact on air quality due to less vegetation)
2. Increased traffic and congestion (longer commute times, more air pollution from vehicles, strain on local road infrastructure)

Question 3