Month: March 2019

Question 1:List four human activities that can destroy the ecosystem. Answer:Logging, open burning, illegal hunting, unrestricted catching of fish(Any other answers are accepted) Question 2:State two effects for each of the following activities to the balance of nature.(a) Deforestation (b) Industrialisation(c) Agriculture (d) Waste disposal Answer:(a) (i) Destruction of habitat(ii) Migration or death of animals(b) (i) … Read more

Question 1:Fill in the boxes using the choice of answers given.(a) A group of goats in a grass field.  [   ](b) A small pond that has lotus plants, grass, a group of tadpoles, a few fish, ducks and frogs.  [   ](c) A grass field that becomes the living place of a group of goats.  [  … Read more

Activity 2.3:Aim: To study the habitats, populations and communities in an ecosystem.Instruction1. Work in groups.2. Find a natural ecosystem in your area.3. Conduct an observation of that ecosystem.4. Take photos and list the species, populations and communities of animals and plants that can be found in that ecosystem.5. Prepare a folio of the information that … Read more

Question 1:Name three types of nutrient cycles. Answer:Carbon cycle, oxygen cycle and water cycle Question 2:Give two processes that change the state of matter in the water cycle. Answer:Evaporation and condensation Question 3:Explain the role of organisms in the carbon cycle and oxygen cycle. Answer:Plants and animals use oxygen and release carbon dioxide during respiration.Through … Read more

Question 1:The following is an example of a food chain. Identify the producer, primary consumer, secondary consumer and tertiary consumer. Answer:Producer: cabbagePrimary consumer: caterpillarSecondary consumer: chickenTertiary consumer: snake Question 2:Based on the following organisms:(a) construct a food web.(b) predict what will happen if the paddy plant dies because of a long drought. Answer:(a)(b) Food decreases, … Read more