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

Author Question: The Challenger expedition (1872-1876 ) was a unique and historic voyage. Why? A) It is the longest ... (Read 74 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
on: Aug 22, 2018
The Challenger expedition (1872-1876 ) was a unique and historic voyage. Why?
 A) It is the longest continuous scientific oceanographic expedition on record.
  B) Its scientists developed the first reliable navigational charts to indicate current and wind patterns.
  C) It was the first expedition to use an echo sounder to study the seafloor.
  D) It proved the hypothesis that life could not exist in the deep sea.

Question 2

What contributes to the high biological activity and surface nutrients in southern polar waters?
 A) Deep-water upwelling
  B) Weak stratification
  C) There is a lack of continental margins
  D) All are contributing factors


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yasmin

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Aug 22, 2018
Answer to Question 1

A

Answer to Question 2

D


tfester

  • Member
  • Posts: 534
Reply 2 on: Aug 22, 2018
Thanks for the timely response, appreciate it

mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Unique markings identify individual humpback whales. Unique markings identify individual humpback whales.
challenger challenger
Map of Darwin’s voyage on the HMS Beagle. Map of Darwin’s voyage on the HMS Beagle.
An 1872 Grant campaign poster of “Our Three Great Presidents” at best got it two-thirds right. An 1872 Grant campaign poster of “Our Three Great Presidents” at best got it two-thirds right.
Bertrand Russell (1872–1970). Bertrand Russell (1872–1970).
Generation of various modified dihybrid ratios from the nine unique genotypes Generation of various modified dihybrid ratios from the nine unique genotypes
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library