What is orchipexy?

What are pollocks? How many feet in 100yrds? Are there risks in an older cats pregnancy? How can Builders reduce each type of heat transfer in a building? Since water expands when it freezes can a tree explode from too much pressure if it freezes? What is the main point of using an exhaust fan? Why Fire fighters suit bright and shiny? What are good reflectors of sound with example? When doing science as inquiry should you have some idea of what you think the final result will be? What are some nature questions? Why is the responsiveness important to forensic scientists? What are the various types of thermal cutting equipment? What is Martin Luther's main point of the Letter from Birmingham Jail? Is bubble wrap or plastic wrap a better insulator? Is digesting food an example of change of state? Who made the first spacesuit? What is on a microwave door? What is the correct definition of the term systemic circulation? What are the four types of metal? What is a common element today which was expensive in Victorian times?