What does learning about plants tells us about healthy ecosystems? Objective Students will understand that nature/ resources/ habitat/ populations are constantly changing Students will understand and graph population change over time due to resource availability Students will understand that good habitat with adequate resources is the key to survival Students will understand how invasive species may out-compete native populations for habitat and resources Students will understand the difference between non-native and invasive species Background This series of lessons explores the idea that pla Duration: 60 Minutes Additional Standards: 5.ESS3.1 Obtain and combine information about ways individual communities use science ideas to protect the Earth’s resources and environment. 3.5.ETS1.2 Practice 3: Planning and Carrying Out Investigations.