« previous next »

Author Question: Which best describes Mercury's plains? a. heavily impacted with craters and large rays b. ... (Read 98 times)

karen

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
Which best describes Mercury's plains?
 
  a. heavily impacted with craters and large rays
 b. solidified lava flows that are a uniform gray color
  c. a geologically active surface of molten lava
 d. solidified lava flows rich in dark basalts
 e. a rich layer of soil containing iron and silicate

Question 2

A planetary nebula is a(n) ____.
 
  a. expanding envelope of ionized gas expelled by a dying medium-mass star
 b. expanding envelope of neutral gas and dust expelled by a dying medium-mass star
 c. contracting envelope of dusty material from planets destroyed by a dying medium-mass star
  d. contracting envelope of ionized interstellar medium absorbed by a dying medium-mass star
  e. expanding atmosphere of a medium-mass star as it becomes a red giant


soda0602

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Large intestine. Large intestine.
Anatomy Of Large Intestine Anatomy Of Large Intestine
Parallel Light Rays from Distant Objects Parallel Light Rays from Distant Objects
Plasma protein binding and drug availability: (a) drug exists in a free state or bound to plasma pro Plasma protein binding and drug availability: (a) drug exists in a free state or bound to plasma pro
The digestive system: functions of the small intestine and large intestine (colon) The digestive system: functions of the small intestine and large intestine (colon)
Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma. Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma.
Video: Fermentation pathways

For a complete list of videos, visit our video library