Enrol to start learning
Reading is open to everyone. Enrolling is free, and it is what unlocks the audio lessons, practice tests and progress tracking.
8.6.1. Reducing chemical fertilizer and pesticide use
This section
Practice test
10 questions on this section. Wrong answers show you what to read again.
Sign up to take itWhole chapter
Revision test
Mixed questions from across the chapter. Your answers get marked.
Sign up to take itQuick
Flashcard drill
3 cards from this lesson. Good the night before a test.
Try these first
- 1.
What does DDT stand for?
Hint
Consider the chemical composition.
- 2.
Name one natural method to control pests.
Hint
Think of beneficial insects.
- 3.
What does DDT do to bird populations?
- It increases fertility.
- It causes eggshell thinning.
- It has no effect.
Hint
Consider how chemicals affect reproduction.
- 4.
True or False: Biomagnification occurs only in aquatic ecosystems.
- True
- False
Hint
Think about food chains in different environments.
- 5.
Evaluate the long-term ecological consequences of relying heavily on chemical fertilizers in agriculture.
Hint
Consider the cycle of nutrients and the role of healthy soil.
- 6.
Propose a sustainable plan for a farming operation that currently uses large amounts of pesticides.
Hint
Think about all aspects of farming and sustainability.
Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
4 more questions available
Enrol freeQuiz
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
Get your answers marked and your progress tracked
Enrol freeChallenge Problems
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting