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

Author Question: On average, how often do impactors about 10 km in size, large enough to produce mass extinction, hit ... (Read 105 times)

Mr. Wonderful

  • Hero Member
  • *****
  • Posts: 866
on: Jul 27, 2018
On average, how often do impactors about 10 km in size, large enough to produce mass extinction, hit Earth?
 
  A) once every century
  B) once every thousand years
  C) once every million years
  D) once every hundred million years
  E) once in Earth's history

Question 2

Visible sunspots lie in the
 
  A) chromosphere.
  B) transition zone.
  C) corona.
  D) radiative zone.
  E) granulation in the photosphere.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

softEldritch

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

E


Mr. Wonderful

  • Member
  • Posts: 866
Reply 2 on: Jul 27, 2018
Excellent

mjenn52

  • Member
  • Posts: 351
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Metabolic rates of animals that differ in size. Metabolic rates of animals that differ in size.
Large male size and mating success. Large male size and mating success.
Shark - These species are all at risk of extinction Shark - These species are all at risk of extinction
The Very Large Array (VLA) The Very Large Array (VLA)
The two TP sensors used on the throttle body of an electronic throttle body assembly produce ... The two TP sensors used on the throttle body of an electronic throttle body assembly produce ...
Air-Mass Thunderstorms Air-Mass Thunderstorms
Video: ETC Protein Complexes & Chemiosmosis (Total ATP Production and ATP Synthase)

For a complete list of videos, visit our video library