« previous next »

Author Question: The case of Mars tells us that which of the following is a critical factor in determining surface ... (Read 127 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?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
Critical thinking attitudes and applications Critical thinking attitudes and applications
A rubber mallet used to deliver a force to an object without harming the surface. A rubber mallet used to deliver a force to an object without harming the surface.
Platelet-activating factor Platelet-activating factor
The Small Intestine: A Huge Surface for Digestion & Absorption The Small Intestine: A Huge Surface for Digestion & Absorption
Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity
Video: Hormonal regulation of pregnancy - weeks 17 through 38

For a complete list of videos, visit our video library