Changes in the color of lawns can be a __ indicator of the changing of the seasons.

Changes in the color of lawns can be a __ indicator of the changing of the seasons.

• A. Climatic
• B. Aesthetic
• C. Phenological
• D. Nutritional

Answer: (C)

The main idea is phenology—the timing of life-cycle events in organisms as they respond to seasonal cues. Lawn color shifts reflect how grass goes through different growth stages with the seasons: green during active growth when daylight and temperatures favor photosynthesis, and dull or brown when conditions trigger dormancy. This makes color change a biological timing signal about the season, rather than a weather statistic (climatic), a matter of appearance (aesthetic), or a result of nutrient levels (nutritional).

The main idea is phenology—the timing of life-cycle events in organisms as they respond to seasonal cues. Lawn color shifts reflect how grass goes through different growth stages with the seasons: green during active growth when daylight and temperatures favor photosynthesis, and dull or brown when conditions trigger dormancy. This makes color change a biological timing signal about the season, rather than a weather statistic (climatic), a matter of appearance (aesthetic), or a result of nutrient levels (nutritional).