So if your high school Spanish lessons are a buried memory or even if you're already bilingual and just want to find out what that skill is doing for you, here are five reasons why you should start learning a foreign language right now: 1. To improve your communication skills. The key here is consciousness.
carbon dioxide. A colorless, odorless gas that is present in the atmosphere and is formed when any fuel containing carbon is burned. It is breathed out of an animal's lungs during respiration, is produced by the decay of organic matter, and is used by plants in photosynthesis.
Carbon dioxide. Carbon dioxide (chemical formula CO2) is a naturally occurring colorless gas with a density about 60% higher than that of air (1.225 g/L) that is odorless at normally encountered concentrations. Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms.