Human influences on the environment

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Question 2
Medium
a.

Insecticides are chemicals used to control pest populations.

Name the main group of invertebrate animals targeted by insecticides.

[1]
b.

Name the kingdom of organisms that naturally produce compounds such as nicotine or caffeine to defend against these animal pests.

[1]
c.

Over time, some insecticides are no longer effective at controlling pest populations. Use your knowledge of natural selection to explain why.

[5]

Human influences on the environment Questions

  1. IGCSE
  2. /Biology
  3. /Human influences on the environment