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Questions covered are: 1. Why do we respire? 2. What is cellular respiration? 3. Write the difference between aerobic and anaerobic respiration? 4. Why do we get muscle cramps after heavy exercise? 5. What is breathing? 6. What makes up the respiratory system? 7. Write the Pathway of Breathing in…
Global warming is the long-term increase in Earth’s average surface temperature due to the buildup of greenhouse gases like carbon dioxide (CO₂), methane (CH₄), and water vapor (H₂O) in the atmosphere. These gases trap heat from the Sun, leading to a warming effect known as the greenhouse effect. Global warming…
Chemistry Mixture: A substance obtained by mixing more than one pure substance Pure Substance: A substance that is made up of only one kind of particles Homogenous Mixture: A mixture in which all components are evenly distributed throughout the mixture is called as Homogenous mixture Heterogenous Mixture: A mixture in which all components are…
Grade 8, Science Chemistry Define Combustion?? Difference between Combustible and Non combustible substances?? Combustible substances Non combustible substances Substances that burn easily in air to produce heat and light are called combustible substances Substances that do not burn in air are called Non combustible substances Ex: Cloth, Wooden stick, dry…