Can I please get help with it ​

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.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

How can an organ, such as the lungs, work for multiple body systems?