Unit 4

• Argument


  The use of evidence to say why one idea is the best
• Claim


  A proposed answer to a question
• Data


  Observations or measurements recorded in an investigation
• Decomposer


  An organism that breaks down droppings or dead organisms
• Ecologist


  A scientist who studies ecosystems
• Energy


  The ability to make things move or change
• Environment


  All the living and nonliving things in an area
• Evidence


  Information that supports an answer to a question
• Food web


  A diagram that shows what eats what in an ecosystem
• Matter


  The stuff that things are made of
• Model


  Something scientists make to answer questions about the real world
• Molecule


  A group of atoms joined together in a particular way
• Nutrient


  Something taken in by plants and animals that helps them grow
• Observe


  To use any of the five senses to gather information about something
• Organism


  A living thing, such as a plant or an animal
• Restoration


  The process of returning something to its original condition by fixing or repairing it
• Soil


  A mixture of rocks, water, air, parts of dead organisms, and tiny living organisms
• Synthesize


  To put together multiple pieces of information in order to understand something