While conducting fieldwork at a local body of water, you and your lab partner encounter something that looks like a rock. Your partner insists that the specimen is composed of many marine and aquatic organisms. They are stony, but are actually alive. Describe at least four criteria that would indicate that this thing is in fact alive.

a. the production of carbon dioxide through the process of photosynthesis

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers