Afforestation: This is the process of establishing a forest, or stand of trees, in an area where there was no forest. It's like restocking the library with new books after they've been removed.
Habitat Destruction: This refers to changes in land use that lead to alterations in habitat structure that render it unsuitable for supporting its native species. It's akin to turning a library into a fast-food restaurant - it can no longer serve its original purpose.
Biodiversity Loss: This term refers to the decrease in variety and variability of life forms on earth due largely to human activities such as deforestation. Like losing unique and rare books from our library analogy.