1 Science is a way of knowing about the natural world and is characterized by empirical criteria, logical argument and skeptical review.
220.127.116.11.1 Understand that prior expectations can create bias when conducting scientific investigations.
18.104.22.168.2 Understand that when similar investigations give different results, the challenge is to judge whether the differences are significant, and if further studies are required.
2 Scientific inquiry uses multiple interrelated processes to investigate questions and propose explanations about the natural world.
22.214.171.124.1 Generate and refine a variety of scientific questions and match them with appropriate methods of investigation, such as field studies, controlled experiments, reviews of existing work and development of models.
126.96.36.199.2 Plan and conduct a controlled experiment to test a hypothesis about a relationship between two variables, ensuring that one variable is systematically manipulated, the other is measured and recorded, and any other variables are kept the same (controlled).
188.8.131.52.3 Explain how the number of populations an ecosystem can support depends on the biotic resources available as well as abiotic factors such as amount of light and water, temperature range and soil composition.
2 The flow of energy and the recycling of matter are essential to a stable ecosystem.
184.108.40.206.1 Recognize that producers use the energy from sunlight to make sugars from carbon dioxide and water through a process called photosynthesis. This food can be used immediately, stored for later use, or used by other organisms.
220.127.116.11.3 Explain that the total amount of matter in an ecosystem remains the same as it is transferred between organisms and their physical environment, even though its form and location change.
3 Evolution in Living Systems
1 Reproduction is a characteristic of all organisms and is essential for the continuation of a species. Hereditary information is contained in genes which are inherited through asexual or sexual reproduction.
18.104.22.168.1 Recognize that cells contain genes and that each gene carries a single unit of information that either alone, or with other genes, determines the inherited traits of an organism.