Extinction Flashcards
Why do the older speices tend to die when there are new conditions?
They cannot cope with the conditions therefore they die
What is the main problem that causes extinction?
A change in environment, asteroids,supervolcnoes and movement of techtonic plants
What other changes can cause extinctions?
A change in temp,new predators,new diseases, or new more successful competitors
How do volcanic eruptions cause extinction?
It creates a lot of ash in the atmosphere which leads to new conditions which a lot of organism cannot cope with therefore they could go extinct
Why do new predators move location and whyd oes that cause extinction?
The predators move location because of human intervention. This causes extinction as the predators will find their new prey within that area to which they live off therefore their prey could go extinct
Where is it likely that diseases cause extinction
Islands
Can competotion cause extinction?
Yes, this is because the domiant specie will liely take more of the food in the habitat which means the other animals could go extinct
What happens to organisms that do well in the climate and to those who don’t?
Organisms that do well in the temperature of a
tropical climate wouldn’t do well in the freezing conditions of an Ice-Age. As of this these animals would become extinct but the animals that are suitable to these conditions will continue to strive.
What shows that there has been mass extinctions?
Fossil evidence
What causes mass extinctions
What would usually cause a mass extinction is one single catastrophic event. For example an volcanic eruption or a collision of a giant asteroid hitting the earth’s surface
What caused the extinction of dinosaurs?
What caused the extinction of dinosaurs is that of a meteor hitting the earths surface. As it was a massive collision as of the meteor’s size it caused a lot of ash to go into the atmosphere, the ash was blocking the sun. What this meant was that the plants could not grow which means the dinosaurs had no food source which means over the next couple of years all the dinosaurs went extinct
What does extant mean?
Living things
