How would you make this observation "the grass is tall" a more scientific observation?

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism