Science 7 Final Review . Part A Unit 1 Interactions & Ecosystems. Unit 1: Interactions & Ecosystems. What are the 4 needs of living things?. Food, water, suitable habitat, gas exchange. What are adaptations? Example?.
Unit 1 Interactions & Ecosystems
Inherited characteristics that help an organism survive and reproduce in their environment.
Total area of land and water needed to supply what we use and absorb our wastes
Shows the biomass or number of organisms at each level of the food chain. Producers form the base.
The different types of harmful materials that are released into the environment through human activities
The movement of pollutants through levels of a food chain so that greater quantities are retained with movement up the food chain
What is the difference between a manipulated, responding, and controlled variable?