The activity having negative impacts on earth are :
Burning of fossil fuels.
Venting methane into air from landfills
Fracking in unstable soil.
These three events will causes negative impact on the environment by depleting the resources of the earth that is beneficial for various types of purposes.
The activity having positive impacts on earth
Recycling glass and plastic
Planting trees and shrubs
These events helps in maintaining the ecological balance of the earth.