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Weather and Ecosystem Analysis
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Weather and Ecosystem Analysis
📚 Part 1: Weather Patterns & Sunlight Effects
1. A region has three warm, dry days followed by a sudden drop in temperature and heavy rain. Which type of front most likely caused this change?
Warm front
Cold front
Stationary front
Occluded front
2. Over one week the daily high temperature rises from about 60°F to about 80°F. Which explanation best fits this pattern?
Passage of a cold front
Seasonal warming or a heat wave
Ocean cooling event
Increased cloud cover each day
3. In a dense forest understory, many plants have large, thin leaves oriented horizontally. This trait is primarily an adaptation to:
Reduce water loss in dry soil
Capture limited sunlight efficiently
Withstand strong winds
Store extra nutrients
4. Why is the midday sunlight stronger (more direct) in summer than in winter in the Northern Hemisphere?
Earth is closer to the Sun in summer
The tilt of Earth's axis makes the Sun higher in the sky
Sun emits more energy in summer
More cloud cover blocks sunlight in winter
5. If cloud cover increases across a region, which combined effect on temperatures is most likely?
Higher daytime highs and lower nighttime lows
Lower daytime highs and higher nighttime lows
No change to daily temperature range
Only nighttime temperatures are affected
🌍 Part 2: Human Impacts on Ecosystems
6. Increased pavement and rooftops in a city lead to faster stormwater runoff into a nearby stream. The most direct effect on the stream is:
Lower peak flows during storms
Higher peak flows and more erosion
Cleaner water entering the stream
Increased groundwater recharge
7. Runoff from farmland carries excess fertilizer into a lake. The immediate ecological consequence is usually:
Fewer algae and clearer water
Algal blooms followed by low dissolved oxygen (hypoxia)
Permanent increase in fish populations
Rapid cooling of the lake water
8. Removing trees along a shaded stream bank will most likely cause the stream to:
Become colder with higher oxygen levels
Warm up and often hold less dissolved oxygen
Be unaffected because water controls temperature
Freeze more often in winter
9. Which human action most directly reduces habitat fragmentation for wildlife?
Building more roads through forests
Installing bright night lighting along highways
Creating wildlife corridors or protected corridors
Replacing native plants with lawns
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