01:119:115 Study Guide - Monophyly, Ecological Succession, Punnett Square

The higher the complexity, the more properties emerge. There is a correlation between structure and function at all levels. Cells are the most basic units of life, and they contain dna. Energy in a system flows in one direction. Energy is lost with each transfer as heat. About 1. 4 million species on earth right now are about 1% of all that have ever existed. A large number of species have many features in common. Explains how commonalities are shared because of a common ancestor. The scientific method: observation, question, hypothesize, make a prediction, test the prediction. Controlled experiments compare an experimental and control group. The dependent variable is the factor measured for change. Essential elements are needed by organisms to be healthy and reproduce. Trace elements are needed by organisms in minute quantities. Matter has the natural tendency to move toward lowest possible potential energy. Elements are made of atoms; atoms are made of subatomic particles.