EVERYDAY SCIENCE

Detailed explanation-1: -Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms. Nearly all autotrophs use a process called photosynthesis to create “food” (a nutrient called glucose) from sunlight, carbon dioxide, and water.

Detailed explanation-2: -All living things need food. Plants make their own food through photosynthesis. Animals get food by eating other living things. Some important food molecules are fats, proteins, and sugars.

Detailed explanation-3: -Living organisms have basic needs. Plants need air, water, nutrients, sunlight, and space to grow. Animals need air, food, water, and shelter. Living organisms depend on each other and on their environments, or habitats, to meet their needs for survival.

Detailed explanation-4: -Growth is the increase in mass of an organism that occurs due to an increase in cell size or cell number. Growth of an organism is the irreversible increase. The growth in the number of cells that occurs due to cell division is called hyperplasia, while the increase in the cell size is called hypertrophy.

Detailed explanation-5: -It gives them energy to perform various activities. All activities such as playing, running, walking, studying, etc. require energy. The various components present in our food such as carbohydrates, proteins, fats, vitamins, and minerals provide energy to our body.