ХА Pretest Unit 1
Question 7 of 30
Which of the following lists the steps of technological development in the
correct order, from first to most recent?
O A. (1) Joseph and Jacques Montgolfier invent the hot air balloon; (2)
The kite is invented in China; (3) Frank Whittle and Hans von Ohain
invent the jet engine; (4) Orville and Wilbur Wright pilot the first
airplane
O B. (1) Joseph and Jacques Montgolfier invent the hot air balloon; (2)
The kite is invented in China; (3) Orville and Wilbur Wright pilot the
first airplane; (4) Frank Whittle and Hans von Ohain invent the jet
engine.
O C. (1) The kite is invented in China; (2) Orville and Wilbur Wright pilot
the first airplane; (3) Joseph and Jacques Montgolfier invent the
hot air balloon; (4) Frank Whittle and Hans von Ohain invent the jet
engine.
O D. (1) The kite is invented in China; (2) Joseph and Jacques
Montgolfier invent the hot air balloon; (3) Orville and Wilbur Wright
pilot the first airplane; (4) Frank Whittle and Hans von Ohain invent
the jet engine?

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.  

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

what tree

explanation: