A large number of species goes extinct in a short period of time.
100
What ecosystem is the most diverse, which one the least?
Most = rainforest
least = desert or tundra.
100
What is the definition of a direct economic benefit? Give 3 examples.
Something that humans obtain directly from the biosphere like food, clothing, shelter, medicine...
100
What type of diversity does genetic engineering depend on?
genetic diversity
200
What is edge effect?
When the edges of a habitat have different environmental conditions than the interior.
200
What group of animals has suffered the highest percentage of extinctions in the last 400 years?
Mammals
200
Which ecosystem provides the most plants for use in medicines?
rainforest
200
What is the definition of an indirect economic benefit? Give one example.
Something that does not affect human directly like water filtration, cycling of nutrients, flood protection.
200
True or False. Biodiversity has a direct effect on an area's economy.
True
300
What is habitat degradation?
When humans interrupt a habitat in some way.
300
What type of ecosystem is most susceptible to extinctions, DESERTED island or mainland?
Mainland.
300
What does edge effect do to biodiversity?
The more edge there is the lower the diversity will be. Negative effect.
300
What has a bigger effect on biodiversity, habitat loss or habitat fragmentation?
habitat loss.
300
If the rainfall on a tropical savannah increases to 800 cm in a year, what biome is it turning into? Does this increase or decrease biodiversity?
It is turning into a rainforest.
Increases biodiversity.
400
Why does a small island have more edge area than a large island?
The size of the edge is the same no matter if you are looking at the small island or the large island. This causes the small island to have a higher percentage of edge than the large island.
400
What type of ecosystem is most susceptible to extinctions, INHABITED island or mainland.
island
400
Why is diversity important to the biosphere?
It helps to make the biosphere healthy.
400
Spell a word.
O V E R E X P L O I T A T I O N
400
What is species diversity? What does a decreased species diversity do to the ecosystem?
species diversity is the number of different species and the members in a population. A low species diversity has a negative impact on the ecosystem.
500
What is better for protecting, a large area of land or several smaller areas of land?
One large area of land.
500
What would happen to an ecosystem if only one species went extinct?
The entire ecosystem would change. Some species that depend on it would go extinct and other species that got eaten by that organism, the population would start to increase exponentially.
500
Name and summarize the 3 types of diversity.
genetic
species
ecosystem
500
Put these ecosystems in order from least diverse to most diverse.
rainforest, cornfield, grassland, woodland