MS-LS4-4

Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals' probability of surviving and reproducing in a specific environment.

  1. Life

    Caught in the act

    Scientists observe some evolutionary speed demons as they adapt over the course of just a few years to new environmental conditions.

    By Alison Pearce Stevens
  2. Chemistry

    A plant enemy’s enemy

    Plants use chemicals to recruit help in fighting off pests.

    By Jill Richardson