‘Life’ living in water and on land; executed by coordinated action of land, sea, and air forces organized for invasion: literally means a being living a double life.

A training program in which a person is given information about physiological processes (heart rate or blood pressure) that is not normally available with the goal of gaining conscious control of them

Study of very small ‘life’ forms

a ‘life’ history written by one's self

The Marines are considered an *__ military unit as they fight on both land and sea. Seals, turtles, and penguins are *____ that can live and survive both on land and water.

The leech and the host have a *___ if not parasitic, relationship. The twins have been living together so long that their *___ relationship has become almost toxic; they dress alike, talk alike, have the same eating schedule, and they refuse to go anywhere without the other. Humans and the environment don't have a *___ relationship; we need the Earth, but the Earth doesn't need us to survive.

This committee of scientists and philosophers study the *___ of experimenting on live animals. During World War II, Hitler's scientists experimented on twins, homosexuals, individuals with disabilities, and young people, but they made many interesting discoveries; so, a *___ committee has discussed whether it's ethical to use that data or not.

The Amazon is a *___environment that is quickly becoming extinct due to tree harvesting and global warming. My brother's dorm room is a plethora of *___.