Materials, such as sand and rocks, are constantly being added to land masses through the process of deposition. deposition occurs when the weights of the materials are greater than the forces that are transporting the materials.

jeremiah sets up an experiment to better understand the process of deposition. in his experiment, he places a pile of sand at the top of a tube. then, he pours water down the tube at varying speeds. finally, he measures the amount of sand that is deposited throughout the tube.

what is the test variable (independent variable) in jeremiah's experiment?

a.
the initial quantity of sand
b.
the speed of the water
c.
the type of tube that was used
d.
the quantity of sand in the tube

the scientific method.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.