Dictionary » E » Extinction

Extinction

Extinction

1. (Science: ecology) The death of an entire species.

2. (Science: psychology) The procedure of presenting the conditioned stimulus without reinforcement to an organism previously conditioned. It refers also to the diminution of a conditioned response resulting from this procedure.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: What is the most poisonous snake in da world?

... is the most poisonous snake in the world. Only 2mg of its venom can kill a human. it can attack from 4-6 feet. Though now it is on the verge of extinction.

See entire post
by stephenmorphey
Fri Aug 21, 2009 7:05 am
 
Forum: Zoology Discussion
Topic: What is the most poisonous snake in da world?
Replies: 177
Views: 192564

Re: Question on Predators/ NS

... very good, and natural selection is evident. But you have to have new information in the genome, and NS is taking away from the gene pool through extinction. Am I missing something here?

See entire post
by AFJ
Wed Jul 29, 2009 2:08 am
 
Forum: Evolution
Topic: Question on Predators/ NS
Replies: 6
Views: 157

Re: Inter species breeding with fertile offspring

... fact is natural selection was falsified All you have to do is watch two male whales sparring for breeding rights and you see NS. If you see extinction you in some cases see NS. If you death because of deleterious mutations, or disappearance of a harmful or useless trait then you see NS. ...

See entire post
by AFJ
Mon Jul 27, 2009 6:07 am
 
Forum: Evolution
Topic: Inter species breeding with fertile offspring
Replies: 30
Views: 547

Any SOLID arguments against evolution?

... multiply until they run out of food then maybe ate each other until there was more food available. Something happen then they were driven to extinction then something else took over. Most of the crust is silicon and oxygen, with of course all the other elements and compounds. [/i] WHERE ARE ...

See entire post
by GaryGaulin
Thu Jun 04, 2009 8:57 pm
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 106
Views: 16661

Optical density Q

... 0.7 when measured at 400nm. in a 1cm glass cuvette. The solution had been prepared by dissolving 35mg of X in 50 ml of water. What is the molar extinction coefficient of X at 400nm? (mol. wt. of X is 450) (20% of the marks) (ii) Measurements of lactate dehydrogenase (LDH) activity were carried ...

See entire post
by monkey07
Mon Jun 01, 2009 4:34 pm
 
Forum: Molecular Biology
Topic: Optical density Q
Replies: 0
Views: 409
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 3,786 times. 
What links here | Related changes | Permanent link