Before humans built things, these spaces were probably a habitat for other people.

Humans can help preserve and area’s ecosystem by planting young trees that are native to the area to replace the trees that they remove.

Planting native trees is NOT so important. Native trees just they help preserve the original ecosystem and help provide food and shelter for birds, insects, etc.

Buildings and roads change the environment phisically. They can also affect the living things in the ecosystem.

Cities are different from the environment that was there before humans built the city. Cities are covered with buildings and pavement that did not exist there before.

Buildings and pavement do not affect plant life in an area. A lot of plants can grow when the ground is covered with buildings and pavement.

A rooftop garden is a Garden built at the top of a building. They help clean the air, keep the buildings on which they grow cool, capture Rainwater, and also provide people with food.