Biodiversity

What evidence suggests that an asteroid hit the earth and killed the dinosaurs? Select all that apply.

• Scientists found a layer of asteroid dust

• Scientists have photographic evidence

• A large crater was found in Mexico- possibly from an asteroid

• Asteroids fall every 1000 years, killing all living things.

What is the name of extinction event that killed many of the dinosaurs?

• Ordovician

• Permian

• Cretaceous-Tertiary

• Devonian

Tags

NGSS.HS-LS4-5

Which of the following is evidence of the last mass extinction?

• Written records at that time indicate many organisms died.

• Geologists discovered shocked quartz which is evidence of a meteorite impact.

• There are fewer dinosaurs around today.

• Volcanic rock around the world is dated to the same time period.

The current mass extinction event is different from previous events because

• it is happening at a much slower rate.

• species are going extinct at a much faster rate and it is not the result of natural events..

• it is associated with habitat loss which is different than other mass extinctions.

• it is associated with comets and others have been the result of natural events.

Tags

NGSS.HS-LS4-5

Which of the following is responsible for the greatest loss of biodiversity?

• Habitat loss, degradation, and fragmentation

• Invasive species

• Pollution

• Overharvesting

Which of the following is the best way to save species from extinction?

• Preserve and protect habitats

• Create more zoos

• Create more seed banks

• Genetically engineer species

Some species are so important to the functioning  of an ecosystem that they are called

• keystone species
• cornerstone species
• essential species
• exotic species

Which of the following describes a species that  will soon be gone if nothing is done?

• threatened
• invasive
• endangered
• extinct

A place that stores seeds to preserve their genes for the future is called a/n...

• Botanical preserve
• Plant depository
• Seed bank
• Herbarium

Zebra mussels were first discovered in the Great Lakes thirty years ago and have since spread to lakes throughout the region. Zebra mussels reproduce quickly and have few natural predators.

What will most likely happen to other native mussel species in the Great Lakes region?

• Native species will begin to interbreed with zebra mussels.

• Native species populations will decrease in areas with large zebra mussel populations.

• Individuals of the native species will mutate to become more sililar to zebra mussels.

• Individuals of the native species will mutate to become less similar to zebra mussels/.