Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to help curb the effects of global warming [title] Do not cut down trees and shrubs unnecessarily. [step] Remember the sun's harmful ultraviolet rays can only be cooled when absorbed by the chlorophyll found in trees and plants. Deforestation has compounded and added to the heating problems.

Ending1: The major culprits include: fuel and poor quality and rotting, stunted fruit and seeds. Poor quality vegetation that is toxic to humans making food and water unsafe for the environment. Ending2: [title] Change from being a paper-intensive to being a paper-free organization, hospital, office, etc. [step] This can be achieved by storing information on usbs, cds, and hard drives, thus eliminating the need for printing information on large quantities of paper. Ending3: [substeps] If possible use enclosed houses, a grid-style structure, or decorative dwelling. These are safer and will better retain more moisture and reduce the temperature. Ending4: In response, trees and shrubs dry out more slowly than trees, and lack the sun's energy, efficiency, and nutrition. In addition, the sun's rays can, and should, also reduce histamine hormones and rev up the metabolism of some people and animals.

Answer format: ending1/ending2/ending3/ending4