What does the term transit mean in astronomy?

What were the two types of Romans? Give some examples for blue green algae? How does a volt meter work? What do all the living and nonliving things that interact in a particular area make up? In an electromagnet what are the springy pieces of metal or carbon that makes contact with the commutators contacts? Is Rubbing alcohol evaporting absorbing or releasing energy? What is the movement method of a euglena? Is bamboo sensitive to climate change? When two species interact so closely that they are adapted to each other the interaction is called what? When solutes dissolve can they absorb OR release heat? What temperature does agar liquefy? Are phospholipids proteins? What is a person who investigates the activities of living things called? The greatest number of organisms living in the photic zone of a marine biome are? How many square meters is 5 feet by 8 feet? What is earths most important star? Why potassium chromate shows yellow color? Clay minerals cement layers of sediment together to form what? In which part of the world do typhoons form? Who thinks that Pluto is to small to be called a planet?