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Ck 12: Physical Science: Halogens
[Free Registration/Login may be required to access all resource tools.] Disscusses group 17 elements (Halogens) and their properties.
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Ck 12: Physical Science: Protein Classification
[Free Registration/Login may be required to access all resource tools.] The structure and function of proteins.
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Ck 12: Physical Science: Refraction
[Free Registration/Login may be required to access all resource tools.] Refraction of light in matter and how light changes its speed and angle of refraction according to the type of medium it is travelling through.
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Ck 12: Physical Science: Scientific Modeling
[Free Registration/Login may be required to access all resource tools.] Using models in science and examples of models in physical science.
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Ck 12: Physical Science: Ultrasound
[Free Registration/Login may be required to access all resource tools.] What ultrasound and echolocation are, and how sonar and ultrasonography are used.
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Ck 12: Physical Science: Wavelength
[Free Registration/Login may be required to access all resource tools.] What wavelength is and how it relates to the energy of a wave.
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Ck 12: Life Science: Crustaceans
[Free Registration/Login may be required to access all resource tools.] Crustaceans are a large group of arthropods, consisting of almost 52,000 species. The majority of crustaceans are aquatic. A few groups have adapted to living on...
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Ck 12: Life Science: Echinoderms
[Free Registration/Login may be required to access all resource tools.] You're probably familiar with starfish and sand dollars. They are both echinoderms. Sea urchins and sea cucumbers are also echinoderms. What's similar between these...
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Ck 12: Life Science: Gymnosperms
[Free Registration/Login may be required to access all resource tools.] Gymnosperms have seeds, but they do not produce fruit. Instead, the seeds of gymnosperms are usually found in cones. Learn more about gymnosperms in this learning...
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Ck 12: Life Science: Homeostasis
[Free Registration/Login may be required to access all resource tools.] When you walk outside on a cool day, does your body temperature drop? No, your body temperature stays stable at around 98.6 degrees Fahrenheit. Even when the...
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Ck 12: Life Science: Insect Food
[Free Registration/Login may be required to access all resource tools.] Insects have different types of appendages adapted for capturing and feeding on prey. They also have special senses that help them detect prey. Furthermore, insects...
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Ck 12: Life Science: Keeping Bones and Joints Healthy
[Free Registration/Login may be required to access all resource tools.] You can help keep your bones and skeletal system healthy by eating well and getting enough exercise. Weight-bearing exercises help keep bones strong. Learn more...
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Ck 12: Life Science: Keeping Skin Healthy
[Free Registration/Login may be required to access all resource tools.] Your skin is your largest organ and constantly protects you from infections, so keeping your skin healthy is a good idea. Learn more about keeping skin healthy in...
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Ck 12: Life Science: Salamanders
[Free Registration/Login may be required to access all resource tools.] Salamanders are characterized by slender bodies, short legs, and long tails. They are most closely related to the caecilians, little-known legless amphibians. Learn...
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Ck 12: Life Science: Terrestrial Biomes
[Free Registration/Login may be required to access all resource tools.] A terrestrial biome is an area of land with a similar climate that includes similar communities of plants and animals. Different terrestrial biomes are usually...
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Ck 12: Life Science: Translation of Rna to Protein
[Free Registration/Login may be required to access all resource tools.] The mRNA, which is transcribed from the DNA in the nucleus, carries the directions for the protein-making process. mRNA tells the ribosome how to create a specific...
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Ck 12: Physical Science: Nonmetals
[Free Registration/Login may be required to access all resource tools.] Nonmetals and their properties.
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Ck 12: Life Science: Fermentation
[Free Registration/Login may be required to access all resource tools.] Sometimes cells need to obtain energy from sugar, but there is no oxygen present to complete cellular respiration. In this situation, cellular respiration can be...
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Ck 12: Life Science: Human Genome Project
[Free Registration/Login may be required to access all resource tools.] A person's genome is all of his or her genetic information. In other words, the human genome is all the information that makes us human. Learn more about the human...
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Ck 12: Life Science: Importance of Birds
[Free Registration/Login may be required to access all resource tools.] You are probably familiar with birds as food. Around the world, people consume chicken, turkey, and even more exotic birds, like ostriches. Can you think of other...
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Ck 12: Physical Science: Beta Decay
[Free Registration/Login may be required to access all resource tools.] How and why beta decay occurs, its dangers, beta-minus and beta-plus decay and how to write a balanced nuclear equation for beta decay.
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Ck 12: Physical Science: Boyle's Law
[Free Registration/Login may be required to access all resource tools.] Boyle's law and the relationship between the volume and pressure of a gas.
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Ck 12: Physical Science: Deposition
[Free Registration/Login may be required to access all resource tools.] Definition of deposition and examples of deposition in nature.
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Ck 12: Physical Science: Electric Transformers
[Free Registration/Login may be required to access all resource tools.] Discusses how an electric transformer works and step-up and step-down transformers.
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