Extinction

............. and ................ are from the causes of old extinction.

• Meteorite impacts with the Earth and toxic gases.

• Cutting trees and buildings

• Fossil fuel and cutting trees

• predators and prey

Mention one cause from the causes of the extinction in old ages.

• Cutting trees

• Building

• Weather

• Exposure of the Earth to long ice age.

Mention two causes from the causes of the recent extinction:

• Overhunting and climatic changes

• Cutting trees and buildings

• roads and buildings

• wind and water

................. is\are of the most important causes of extinction in recent ages.

• Volcanic eruption

• Falling of ice bergs

• Falling of meteorites

• overhunting and environment pollution

All of the following are natural disasters that threaten living organisms except .................

• floods

• global warming

• volcanoes

• drought waves

Exclude the unsuitable word:

Long glacial ages \ A meteorite hits Earth \ Destroying habitat \ Volcanoes

• Long glacial ages

• Destroying habitat

• Volcanoes

• A meteorite hits Earth

What was the dominant form of life on Earth for over 100 million years?

• a. Mammals

• b. Birds

• c. Dinosaurs

• d. Reptiles

What did the asteroid impact cause that affected the dinosaurs' survival?

• a. Increased sunlight

• b. Blocked sunlight

• c. Warmer climates

• d. Flooding

What do scientists suggest could have led to food chain imbalances?

• a. Overhunting

• b. Climate changes

• c. Natural disasters

• d. Starvation

According to the video, what should we do to protect wildlife?

• a. Build more cities

• b. Save wildlife habitats

• c. Increase hunting

• d. Ignore wildlife needs