We use our senses to observe the world around us. Organisms have basic needs, such as food, water, air, space, and shelter. Each type of organism has specific needs, such as type of food, amount of water, amount of light, amount of space, and type of shelter. There is a wide diversity of living things on earth. Organisms grow, change, and die over time.
Some plants grow from seeds.
The roots grow first and then the stem. Plants have similarities, such as the ability to grow and the need for water, light, space, and air. Animals have similarities, such as the ability to move and the need for food, water, space, and shelter. Plants and animals have similarities, such as basic needs, ability to grow and change, and death. Humans are similar to other organisms.