Question

1. what types of human activities lead to acid rain? 27. use evidence from the “effects of ph on fish size” data table to show how increasing acidity affects fish. 28. look at the “emissions contributing to acid rain”. create a line graph (below) to display how sulfur dioxide (so₂) emissions have changed over time. create the graph by dragging the blue dots to the appropriate spot in the graph. after all of the data points are in place, use the line tool \\ to add lines between the data points. change the line color \\ to blue.

Explanation:

Question 26:

Human activities leading to acid rain include burning fossil fuels (like coal, oil, gas) in power plants, vehicles, industries (releasing SO₂, NOₓ), deforestation, and agricultural practices (e.g., fertilizer use). Major sources are industrial emissions, vehicle exhaust, and power generation.

To show how increasing acidity (lower pH) affects fish, we analyze the "Effects of pH on Fish Size" data. First, identify pH levels (e.g., 4.5, 5.0, 6.0, 7.0) and corresponding fish size (length/weight). Then, organize into a table: list pH (independent variable) and fish size (dependent variable). For example, if data shows: pH 7.0 - fish size 10 cm; pH 6.0 - 8 cm; pH 5.0 - 5 cm; pH 4.5 - 2 cm. The table would display this trend (decreasing fish size with lower pH).

Step 1: Identify Data Points

Locate the blue dots (data points) for SO₂ emissions over time on the "Emissions Contributing to Acid Rain" graph. These dots represent emission levels at different time intervals (e.g., years).

Step 2: Drag Dots to Correct Spots

Drag each blue dot to the appropriate spot on the graph (align with the correct time - emission value). Ensure each dot is placed accurately based on the data (e.g., if in 1990, SO₂ emissions were 10 million tons, place the dot at (1990, 10)).

Step 3: Add Lines Between Points

Use the line tool to connect the data points in chronological order (from earliest to latest time). This creates a line graph showing the trend of SO₂ emissions over time.

Step 4: Change Line Color to Blue

Use the color - change tool to set the line's color to blue, as instructed.

Answer:

Human activities leading to acid rain include:

• Burning fossil fuels (coal, oil, gas) in power plants, vehicles, and industries (releasing sulfur dioxide (SO₂) and nitrogen oxides (NOₓ)).
• Industrial processes (e.g., metal smelting) that emit SO₂/NOₓ.
• Deforestation (reduces natural acid neutralization).
• Agricultural practices (e.g., fertilizer use, livestock farming) contributing to nitrogen - based emissions.

Question 27: