Question

dead zone: a near - shore area of water with little or no dissolved oxygen and organisms
sediments: small pieces of earth materials such as rocks, shells, and other debris.
water on earth: found mostly in oceans
practice questions (use your binder and lab booklet)

1. describe human impact? provide two examples of human impact on land while constructing new buildings.

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 1

Human impact refers to the effect of human activities on the environment. When constructing new buildings on land: 1. Deforestation: Trees are cut down to clear land for construction, which reduces habitat for wildlife, increases soil erosion, and affects the carbon cycle. 2. Soil compaction: Heavy machinery used in construction compacts the soil, reducing its permeability, which can lead to poor water infiltration, affecting plant growth and increasing runoff.

Trade - offs (disadvantages) of new construction in a community include: 1. Loss of green spaces: New buildings often replace parks, gardens, or natural landscapes, reducing areas for recreation, wildlife, and air purification. 2. Increased traffic congestion: New construction can attract more people, leading to more vehicles on the road, longer commute times, and increased air pollution from vehicle emissions.

Macroinvertebrates in a river are sensitive to water quality. Some macroinvertebrates, like mayflies, require clean, well - oxygenated water to survive. If a river has a high number of pollution - sensitive macroinvertebrates (e.g., mayflies, stoneflies), it indicates good water quality. Conversely, pollution - tolerant macroinvertebrates (e.g., leeches, aquatic worms) are more likely to be found in polluted water. So by identifying the types and abundance of macroinvertebrates, we can infer the water quality (e.g., presence of pollutants, oxygen levels).

Answer:

Human impact is the effect of human activities on the environment. Two examples of human impact on land during new building construction are: 1. Deforestation (cutting trees to clear land, reducing wildlife habitat and increasing soil erosion). 2. Soil compaction (heavy machinery compacts soil, reducing water infiltration and harming plant growth).

Question 2