Answer:
the layer of the planet Earth where life exists
Explanation:
Answer:
Restoration of native plants and habitats on campuses can provide ecosystem services such as slowing storm water runoff and filtering pollution-c.
If the results of an experiment have different conclusions, something must have changed. these are called **variables**. if more than one variable is changed, the result would be different. because the total conclusion is different, it is a hypothesis, because it is not universally true.
