Here are the completed sentences and multiple-choice answers: Fill in the blanks with the correct words: 1) Surroundings make the ecosystem. $$\boxed{\text{ecosystem}}$$ 2) Plants are the only producers in ecosystem. $$\boxed{\text{Plants}}$$ 3) Sun is the main source of light and energy on the earth. $$\boxed{\text{Sun}}$$ 4) Decomposers break down the dead matter in the soil into simple substances. $$\boxed{\text{Decomposers}}$$ 5) Omnivores are represented by both herbivores as well as carnivores. $$\boxed{\text{Omnivores}}$$ Choose the correct answer form the given alternatives: 1) Which of these is abiotic component Abiotic components are non-living parts of an ecosystem. Soil, air, and water are all non-living. The correct option is d). $$\boxed{\text{d) all of these}}$$ 2) What do plants need for the process of photosynthesis Plants require carbon dioxide ($\text{CO}_2$), sunlight, and water to perform photosynthesis. The correct option is d). $$\boxed{\text{d) all of these}}$$ 3) Which one of these animals is not carnivore A carnivore is an animal that eats meat. • Lion, tiger, and vulture are all carnivores (vultures are scavengers that eat dead animals). • Deer is a herbivore, meaning it eats plants. The correct option is d). $$\boxed{\text{d) deer}}$$ 4) Which of these animal is a herbivore A herbivore is an animal that eats plants. • Tiger, wolf, and wild dog are carnivores. • Elephant is a herbivore. The correct option is c). $$\boxed{\text{c) elephant}}$$