what is co2 ..can anybody remind me because i forget.

CO2 is carbon dioxide.

oh yeah now i remember thank you ..it is very useful...sometimes i feel ridiculous hee hee i cant believe i didn't remember that

CO2 stands for carbon dioxide. It is a colorless and odorless gas that consists of one carbon atom bonded to two oxygen atoms. It is naturally present in the Earth's atmosphere, where it plays an essential role in the Earth's carbon cycle and the process of photosynthesis.

To further understand and refresh your memory about carbon dioxide and its properties, you can follow these steps:

1. Online search: Conduct a basic search using a reliable search engine like Google or Bing. Type in "What is CO2?" or "Carbon Dioxide definition" in the search bar. This will provide you with numerous sources containing detailed explanations, including scientific publications, educational websites, and encyclopedia entries.

2. Scientific resources: Visit reputable scientific resources such as the National Aeronautics and Space Administration (NASA) or the National Oceanic and Atmospheric Administration (NOAA) websites. These organizations offer comprehensive information on carbon dioxide, including its sources, impact on climate change, and its role in the environment.

3. Chemistry textbooks or educational materials: If you prefer a more structured approach, consult chemistry textbooks or educational materials. These resources often cover the chemical properties, structure, and behavior of carbon dioxide. Look for sections on atmospheric chemistry or the carbon cycle.

4. Science museums or exhibitions: Visit local science museums, as they often have exhibits or displays on climate change and the carbon cycle. These exhibits can provide interactive and hands-on demonstrations to help you understand the concept of carbon dioxide better.

Remember, the key to refreshing your memory is to seek information from reliable sources and to explore different avenues, including online resources and scientific literature.