What is an Ecosystem? Crossword Puzzle

QUESTIONS LIST:

• omnivores : eat both plants and meat
• photosynthesis : the process of using the energy from the sun to make food.
• earthworms : they make it easy for roots to get air and for water to get into the soil
• tundra : a flat, treeless region whose soil beneath is always frozen
• scavengers : get energy from eating dead things
• producer : a living thing that makes its own food
• consumers : living things that get energy from eating other living things
• green plants : the most common producer
• ecosystem : a natural unit of all the living and nonliving things that interact in one area.
• predators : they become scavengers when food is hard to find
• decomposers : recycle dead organic matter into nutrients in the soil
• carnivore : meat-eater
• fungi : a common decomposer
• herbivore : plant-eater
• niche : what they call the role or job of an organism in the ecosystem
• soil bacteria : one of the main decomposers of the tundra
• twenty four : the tundra is in darkness this many hours in the winter
• lichen : one of the main decomposers of the tundra
• arctic circle : where most tundra occurs