What is the meaning of life (no right or wrong answers just want to see people's different pov's)

Need some ! asap i need to figure out 3 major changes in bridges over time and why these changes to adapt to both improvements in technology and changing social links would also alot.

Nprintmaking, what term is used for the object on which the artist creates a design

What are gender symbols on the bathroom doors at school or other illustrated symbols that stand for some concept called