These seasons include Vasant Ritu (Spring), Grishma Ritu (Summer), Varsha Ritu (Monsoon), Sharad Ritu (Autumn), Hemant Ritu (Pre-Winter) and Shishir Ritu (Winter). The twelve months in a year are divided into six seasons of two-month duration each. In India, there are mainly six seasons as per the ancient Hindu calendar (the Lunisolar Hindu). Concept a: Students need to know that natural systems proceed through cycles and processes that are required for their functioning.Seasons remind us that change is the law of nature and a sign of progress.Principle III: Natural systems proceed through cycles that humans depend upon, benefit from, and can alter.(9-12) The main way that solar energy is captured and stored on Earth is through the complex chemical process known as photosynthesis.Ĭalifornia's Environmental Principles and Concepts.In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. In this reaction, carbon dioxide and water combine to form carbon-based organic molecules and release oxygen. (6-8) The chemical reaction by which plants produce complex food molecules (sugars) requires an energy input (i.e., from sunlight) to occur.(5) The energy released food was once energy from the sun that was captured by plants in the chemical process that forms plant matter (from air and water).PS3.D: Energy in Chemical Processes and Everyday Life:. ![]()
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