IAL Biodiversity Under Threat

The number of animals has decreased by ____

• half

• third

• quarter

• five

Biodiversity is the _______ of life on earth

The three types of biodiversity are ....

• species, soil, food webs

• genetic, biomes, ecosystems

• genetic, species, ecosystem

How many mass extinctions has the Earth suffered?

• 3

• 4

• 5

• 6

This current mass extinction is different because it is caused by ______

• climate

• fossils

• humans

• oceans

Humans consume _______% of primary production

Primary productivity is the rate at which ______ is converted to organic substance

An invasive species is a ___-______ species to an ecosystem and causes harm

Coral reefs and mangroves are essential to .....

• coastal communities

• the atmosphere

• the carbon cycle

• cyclone mitigation

Tropical tortoises are essential to the Earth because .....

• they seed disperse hardwood trees

• the take in carbon

• they eat pesticides

• they're the inspiration for solar panels