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• living things need energy to grow, move and reproduce
• the sun is the main source of energy for all living things
• the sun provides us with light and heat
• plants make food through the process of photosynthesis
• water is absorbed through the roots of the plant
• the chlorophyll found in the leaves in the plant traps lights energy and turns it into food
• photosynthesis produces sugar
• the food / sugar is transported to all parts of the plant after photosynthesis is completed
• animals obtain energy from the food they consume
• the energy from food comes directly or indirectly from the sun
• animals depend on plants directly or indirectly to get the energy they need
• some animals feed on plants. the energy stored in plant parts is passed onto them. some animals feed on other animals. energy is passed from the animals being eaten to the animals eating them
• a habitat is a place where an organism lives. it provides the organism with all it needs to survive
• the characteristics of an environment affect the survival of an organism in the environment
• all organisms need food to survive
• plants can make their own food while animals have to find their own food
• the physical characteristics of an environment (ltwsao) are light, temperature, water, soil, air, other living things
• factors that affect population size are ( r/d, f/w, d, p, h) reproduction/death rate, food/water, disease, predators and human activities
• a force is a push or a pull
• a force cannot be seen but we can observe its effects
• friction is a contact force
• friction opposes motion
• gravity is a non contact force
• gravity always acts on objects
• elastic spring force is a contact force
• magnetic force is a non contact force