EVERYDAY SCIENCE

Detailed explanation-1: -Humans can also accidentally introduce new organisms into ecosystems. These organisms can use up food, space, and water that other organisms need. These animals or plants are called invasive species. They often grow faster or use food that the native species depended on.

Detailed explanation-2: -Animals make changes to the environment by eating. When a macaw eats seeds, it will fly somewhere else and then eventually poop the seeds out. This helps plants grow in new places and changes their environment. Animals make changes to the environment by eating.

Detailed explanation-3: -All living things are able to respond to stimuli in the external environment. For example, living things respond to changes in light, heat, sound, and chemical and mechanical contact. To detect stimuli, organisms have means for receiving information, such as eyes, ears, and taste buds.