« previous next »

Author Question: The case of Mars tells us that which of the following is a critical factor in determining surface ... (Read 137 times)

Awilson837

  • Hero Member
  • *****
  • Posts: 509
on: Jul 27, 2018
The case of Mars tells us that which of the following is a critical factor in determining surface habitability?
 
  A) planetary size
  B) levels of geological activity
  C) distance from the Sun
  D) the presence of a magnetic field

Question 2

What is the most compelling piece of evidence that suggests that the dinosaurs were made extinct by the impact of an asteroid 65 million years ago?
 
  A) a layer of sediment laid down at that time which is littered with dinosaur fossils
  B) dinosaur fossils are found in rock layers older than 65 million years but not younger than 65 million years
  C) a layer of sediment laid down at that time which is rich in the element Iridium (Ir), an element common in asteroids but less common on the Earth
  D) the crater from this impact can still be seen in the deserts of Arizona


Andromeda18

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Awilson837

  • Hero Member
  • *****
  • Posts: 509
Reply #2 on: Jul 27, 2018
TY


Andromeda18

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Pili extending from the surface of Proteus mirabilis. Pili extending from the surface of Proteus mirabilis.
THEMIS image of probable Mars cave entrances THEMIS image of probable Mars cave entrances
Alternative pathway recognition and activation. C3w is on the surface of the microbe; factor B binds ... Alternative pathway recognition and activation. C3w is on the surface of the microbe; factor B binds ...
viable surface sampling using contact plates viable surface sampling using contact plates
Role of Factors of Production in Determining Growth, 1975–2009 Role of Factors of Production in Determining Growth, 1975–2009
Surface Salinity of the Oceans Surface Salinity of the Oceans
Video: Chemical Buffers - protein buffer, phosphate buffer system and bicarbonate buffer system

For a complete list of videos, visit our video library