ACT Science Practice Test 120

I appreciate you providing this test, but I notice a significant mismatch between the passage text and the questions provided. The **passage** begins with "Doctors Without Borders" — an essay about a humanitarian organization — and describes basic healthcare access. The **questions** (Q1–Q5) are entirely about plots, nitrogen fertilizer applications, Kentucky bluegrass, leachate, and EPA standards — topics that have nothing to do with the Doctors Without Borders passage. **I cannot proceed** because: 1. The questions don't correspond to any underlined portions in the passage provided 2. The passage text appears incomplete (it cuts off mid-sentence: "...in some parts of the") 3. There are no standalone question-number digits in the passage text to mark underlined portions 4. The chart reference "Plot B / 2700 / 2001 / 2002 / 3003" doesn't connect to the essay excerpt **To fix this, please provide:** - The **complete passage text** with embedded question-number digits (61, 62, etc.) marking where underlines occur, OR - The correct passage that matches questions Q1–Q5 about nitrogen/fertilizer/leachate Once you supply the correct passage with question markers, I'll render it as HTML with proper `` and `_{` tags.}

PASSAGE VII

Turf grasses are used throughout the United States in many suburban lawns. Kentucky bluegrass is the most common type of turf grass used in the northern part of the United States. To keep lawns green and healthy, many homeowners apply fertilizer up to five times a year. Inorganic fertilizers are becoming more popular, and contain three common elements - nitrogen, phosphorous, and potassium - for the development of plant color, strength, and health. Most turf grass lawns do not use all of the nutrients provided in the fertilizer, which means that much of the nitrogen, phosphorous, and potassium remains in the soil. When water enters the soil, it accumulates a portion of the excess nitrogen from the soil. This water, now termed leachate, flows into surrounding waterways. The leaching of high concentrations of nitrogen into natural waterways can throw off the environmental equilibrium of the aquatic ecosystem, often resulting in an increase in plant growth that can have a negative impact on the native fish populations.

A study was performed to examine the degree of nitrogen leaching in Kentucky bluegrass turf; 2 one-acre plots of turf were compared. The scientists conducting the study relied completely on natural rainwater to irrigate the test plots. Each plot received fertilizer applications containing different levels of nitrogen two times per week during the months of April and September for 5 years. The plots had a 5% slope to facilitate leaching; leachate was collected in one-liter jugs. The leachate collected from each plot was measured for nitrogen concentration.

Plot A received a low nitrogen application: 98 kilograms of N per acre from 2000 to 2004. Plot B received an initially high nitrogen application: 245 kilograms of N per acre from 2000-2003. In the last year of the study, the amount of nitrogen in the fertilizer was decreased to 196 kilograms of N per acre for Plot B. Table 1 shows the average nitrogen concentration in milligrams per liter (mg/L) in the leachate collected from each plot during each year. Figure 1 shows the percent concentration of nitrogen in the leachate.

Science practice 99