1) a harmful or poisonous substance called -------------? a) Toxic  b) Environment  c) Pesticide d) Accumulate  2) living and non living things that surround a living thing is called-------------------? a) Toxic  b) Pesticide c) Accumulate  d) Environment  3) chemical used by the farmers to get rid of the insects called ----------? a) Environment  b) Pesticide c) Toxic  d) Accumulate  4) what do you think the effects of pesticides lead to? a) Death b) Harmful c) Toxic d) All of them 5) Which of the following is a human activity that commonly destroys habitats? a) Natural wildfires b) Seasonal flooding c) Urbanisation and land cleaning d) Volcanic eruptions 6) Overfishing in a marine ecosystem is most likely to cause: a) Increased fish populations overall b) Disruption of food chains and decline of some species c) Cleaner, healthier oceans d) More stable population dynamics 7) Which of the following human actions can cause water pollution affecting aquatic ecosystems? a) Creating wildlife reserves b) Planting native vegetation c) Industrial discharge and chemical runoff d) Limiting pesticide use 8) Which of the following is a positive effort that humans can make to counteract ecosystem damage? a) Expanding urban sprawl b) Increasing pesticide use in agriculture c) Clear-cutting forests d) Establishing protected areas and wildlife corridors

Human Impacts on ecosystems

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