Which stage represents the establishment of the pioneer organisms? 1. None 2. Grasses 3. Shrubs 4.Loblolly pine trees 5. Blackjack oak trees. Please help, I suck at science.

Which stage represents the establishment of the pioneer organisms?

GRASSES

Explanation:

Grasses which are small plants are pioneer organisms as they grow to reach the climax in an ecosystem

blue

light-years

magnitude

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.