How will adding worms to the terrarium affect nitrogen levels in the soil?

Worms are very important in the ecosystem. It helps to increase the amount of water and air that gets in the soil. Worms break down organic matter like grass and leaves for the plants to use. If the worm eats, they leave behind castings that are very useful kind of fertilizer.

Explanation:

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

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.