What is process of-converting meaning into understandable symbols is known as?

The gamete producing haploid form of the green alga ulva is known as a? Is the phrenic nerve a mixed nerve? Where are most of the Milky Way's globular clusters found? How do gravitons escape from black holes? What is the function of firewall and how does it work? Is or how is Mount St Helens being monitored? What is the lining of the body cavities and passages that open to the outside contains mucus and cilia that trap microorganisms and other pathogens and prevent them from entering the body? What is periderm in secondary growth? What is a tissue in vascular plants that provide support and Conducts water and nutrients from the roots? Who first proposed nuclear fusion? Is anhydrite harder than limestone? Why should not pluck the leaves of a plant? Why do scientists look to sedimentary rocks when studying the history of the Earth? What happens to chemical reactions if one puts the reaction inside a fridge? What is uses of holding liquids? How is the interior of the sun similar to the interior of the earth? How did wegener explain the existence of glaciers in the southern landmasses and the lush tropical swamps in North America Europe and Siberia? Is global warming causing polar bears dying? This form of asexual reproduction occurs when one organism divides into two organisms.? What type of vegetation would you expect to find on an abandoned farm that has been undisturbed by humans for 150 years?