2. Explore how a kaleidoscope works. Find two mirrors, and hold them upright on the desk, so they are at an angle to each other like an open book. Set an object between them, and look in the mirrors. How many images do you see?
Slowly bring the mirrors together. What happens? Are the images you see the same? Can you explain what you see?

They are like other investigations? say there was a murder u have to do blood test and finger prints which run through a lab. 

Large asteroid and comet impacts. because they can have a huge impact on the environment, such as a loss of land, and crust on the earth with the big holes they produce. on the other hand, volcanic eruptions can also cause change within the environment by producing land, but im actually not quite sure which one would be a better answer, hopefully you read this and didnt just flat out choose the first sentence i have spoken! your welcome~

Am i to

  talk to him on the phone firstthen set up a date with him and know what he likesthen go out to dinner.