This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following describes erosion? A) the excavation of bowl-shaped depressions by ... (Read 125 times)

meagbuch

  • Hero Member
  • *****
  • Posts: 568
on: Jul 27, 2018
Which of the following describes erosion?
 
  A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface
  B) the eruption of molten rock from a planet's interior to its surface
  C) the disruption of a planet's surface by internal stresses
  D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather

Question 2

What is the source of luminosity for protostars that have not yet become hot enough for fusion in their cores?
 
  A) light absorbed from nearby stars B) energy released by infalling matter
  C) fusion in their low-density outer layers D) fission from concentrated radioactive elements


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kristenb95

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

B


meagbuch

  • Member
  • Posts: 568
Reply 2 on: Jul 27, 2018
Excellent

olderstudent

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Impacts of glaciers on landscapes can be seen as (a) a U-shaped valley in Labrador, (b) a drumlin fi Impacts of glaciers on landscapes can be seen as (a) a U-shaped valley in Labrador, (b) a drumlin fi
But tortoises on lusher islands where grass is plentiful and the need to reach into trees not so fre But tortoises on lusher islands where grass is plentiful and the need to reach into trees not so fre
The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the
Bacteria may be named for their morphology (shape): cocci (spherical), bacilli (rod shaped), or ... Bacteria may be named for their morphology (shape): cocci (spherical), bacilli (rod shaped), or ...
Early geologists discovered evidence of past glaciations in U-shaped valleys Early geologists discovered evidence of past glaciations in U-shaped valleys
Stethoscope with both a bell-shaped and flat-disc amplifier Stethoscope with both a bell-shaped and flat-disc amplifier
Video: Mendel's Principles of Dominance, Segregation and Independent Assortment

For a complete list of videos, visit our video library