« previous next »

Author Question: Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such ... (Read 17 times)

robinn137

  • Hero Member
  • *****
  • Posts: 544
on: Jul 13, 2018

Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such
  altitudes, the Tibetans are above roughly:a.
   10 of the air molecules in the atmosphere.
  b. 25 of the air molecules in the atmosphere.
  c. 50 of the air molecules in the atmosphere.
  d. 75 of the air molecules in the atmosphere.



Question 2

Since the turn of this century, CO2 in the atmosphere has:a.
   been increasing in concentration.
  b. been decreasing in concentration.
  c. remained at about the same concentration from year to year.
  d. disappeared entirely.



olderstudent

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 13, 2018
Answer to Question 1

c

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Blood Pressure Chart Blood Pressure Chart
Dorsiflexion of the foot with direct pressure to bottom of foot with the thumbs. Dorsiflexion of the foot with direct pressure to bottom of foot with the thumbs.
Press up under the cheekbones. Use light to moderate pressure to press into the soft tissues up ... Press up under the cheekbones. Use light to moderate pressure to press into the soft tissues up ...
5-4 The relationship between vapor pressure and temperature—in this case for water. As the ... 5-4 The relationship between vapor pressure and temperature—in this case for water. As the ...
Arteries as Pressure Reservoirs Arteries as Pressure Reservoirs
Change in Blood Pressure through the Systemic Circuit Change in Blood Pressure through the Systemic Circuit
Video: Role of the urinary system - acidosis and alkalosis

For a complete list of videos, visit our video library