Name three evolutionary trends that occurs as organisms become more complex

legs nose and eyes I think or a type of defense like spikes or shells.

Explanation:

Reason you need legs to move faster normally is a common thing among animals.

A nose so you can smell what is around you this can be very different among animals such as for insects they tend to have antenna and for snakes they use their tong I believe.

Eye's almost every creature has these in some way it can be compound eyes like that of a insect to the eyes of a snake or human.

Finally A shell or spike these are always a nice thing to have for protection against predictors we can see this happen with cactus and porky pines, or a shell such as for most water animals like turtles and squids in some cases even crabs.