The flow of energy in an ecosystem starts with and then follows the food chain and ends with the consumer.

The answer is The flow of energy in an ecosystem starts with  SUNLIGHT and then follows the food chain and ends with the TERTIARY consumer.

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.