mature tropical forest - n. a tropical forest that is neither young nor old-growth, has a closed canopy and grows close to the equator

biodiversity - n. the existence of many different kinds of plants and animals in an environment

emission - n. the production and discharge of something, especially gas (such as carbon dioxide) or radiation

conservation - n. the protection of animals, plants, and natural resources

straight - adj. in a row (as it relates to years)

logging - n. the activity or business of felling trees and cutting and preparing the timber

primary forest - n. a mature natural humid tropical forest that has not been completely cleared and regrown in recent history

chocolate - n. a food that is made from cacao beans and that is eaten as candy or used as a flavoring ingredient in other sweet foods