Identify the two trees listed in the chart that are most closely related. Common Name
Scientific Name
Arizona walnut
Juglans major
Blue spruce
Picea pungens
Douglas fir
Pseudotsuga menziesii
Populus fremontii
Fremont cottonwood
Gambel oak
Quercus gambelii
Ponderosa pine
Pinus ponderosa
Quaking aspena
Populus tremuloides
Utah juniper
Juniperus osteosperma
White fir
Abies concolor

b. read the phase at the intersection of any given temperature and pressure.

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.