is doing an experiment with titration. She wants to continuously monitor how the pH of an acidic solution changes while she slowly adds base over time. Which tool should she use for her experiment? A. pH probe B. electronic balance C. temperature probe D. pH paper

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.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .