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

Author Question: Who was the first person to suggest that all of the continents had been once joined together as a ... (Read 48 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
on: Jul 15, 2018

Who was the first person to suggest that all of the continents had been once joined together as a
  supercontinent called Pangaea and when was that idea proposed? What will be an ideal response?



Question 2

How does the introduction of a geographic barrier encourage the evolution of species? What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 15, 2018
Answer to Question 1

The German meteorologist Alfred Wegener proposed the existence of Pangaea in 1915.

Answer to Question 2

A population that is not separated will interbreed, so there will be little opportunity for different
species to form. If a barrier separates that population and if conditions are different on either side of
the barrier, natural selection will favor certain traits over others, and over time the two different
populations of organisms may evolve to become different species.



fasfsadfdsfa

  • Member
  • Posts: 554
Reply 2 on: Jul 15, 2018
Thanks for the timely response, appreciate it

cassie_ragen

  • Member
  • Posts: 347
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

A comparison between chromosomes found in a normal human cell and a cancer cell from the same person A comparison between chromosomes found in a normal human cell and a cancer cell from the same person
Older adults may grieve intensely over the loss of a person or situation that has been a part of the Older adults may grieve intensely over the loss of a person or situation that has been a part of the
The heavily worn, and sometimes cutmarked, anterior teeth of Neadertals suggest that these teeth wer The heavily worn, and sometimes cutmarked, anterior teeth of Neadertals suggest that these teeth wer
A person with a defective "P" gene might only have it effect the EYES A person with a defective "P" gene might only have it effect the EYES
Increase in rainfall on continents Increase in rainfall on continents
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Video: Types of Burns

For a complete list of videos, visit our video library