The Evolution and interaction of Living Things
Maryland Education Standards. Over 3.5 billion years ago, the Earth was much different than it is today. Scientists believe that early Earth’s atmosphere was made up of nitrogen, water vapor, carbon dioxide, and methane. All of these gases are still on Earth today, but in different quantities. The gases in Earth's atmosphere include: Nitrogen - 78 percent, Oxygen - 21 percent, Argon - 0.93 percent, Carbon dioxide - 0.04 percent,
Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor. Read More...
The resources above correspond to the standards listed below:
MD.3.0. Life Science: The students will use scientific skills and processes to explain the dynamic nature of living things, their interactions, and the results from the interactions that occur over time.
3.D.1. Evolution: Recognize and describe that evolutionary change in species over time occurs as a result of natural variation in organisms and environmental changes.
3.D.1.b. Recognize that adaptations may include variations in structures, behaviors, or physiology, such as spiny leaves on a cactus, birdcalls, and antibiotic resistant bacteria.
3.D.1.c. Recognize and describe that adaptation and speciation involve the selection of natural variations in a population.
3.D.1.e. Recognize that evolution accounts for the diversity of species.
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