Human Impacts on Biology

Open Ended

Describe the pattern observed in each graph. 

Open Ended

Scientist who collected this data think that the decline in mammals may be correlated to the python invasion. Do you agree? Provide a reason for your answer.  

Multiple Choice

How do invasive species threaten biodiversity?

• They cause biomagnification

• They can reduce the populations of native species through predation or competition.

• They reduce ocean acidification

• They increase land conservation

Multiple Choice

What is the main reason biologists remove invasive pythons from the Everglades?

• pythons can survive diseases native snakes can't

• pythons prey on native organisms and reduce their population

• pythons cause native snake populations to increase

• pythons could breed with native snakes

Multiple Choice

Invasive Fire Ants thrive in the US because they do not have natural predators here. How can this impact native ant populations?

• decline in native ant species by competing for their resources

• native ants preyed on fire ants and the population increased

• they had no impact on native ant populations

Multiple Choice

How would construction of a neighborhood of 50 houses impact an ecosystem?

• native species would increase in diversity

• producers would be eliminated

• predators would increase

• biodiversity would decrease

Multiple Choice

How can raising fish in captivity (aquaculture)

contribute to sustainable development?

• can increase genetic varation

• overfishing of the oceans can be prevented

• prevents pollution from factories

Multiple Choice

Whale populations have decreased dramatically. In 1986 the global community enacted a ban on whaling, except for Norway and Japan. What is a consequence of their choice?

• the whale populations are quickly recovering in the oceans near Japan and Norway.

• whale populations are not recovering as quickly as they would if all the countries agreed not to hunt whales

• whales are avoiding being hunted

• whale populations have mutated into new species

Multiple Choice

What will happen to aquatic ecosystems if CO2 continues to increase in the atmosphere?

• the amount of animals with shells will increase

• aquatic animals would migrate to warmer areas

• biodiversity would decrease

• population sizes would increase

Multiple Choice

Members of an environmental group have noticed that local fish populations have decreased, and they think eutrophication is to blame. What is the FIRST step they should take to solve the problem?

• Enact laws to reduce fertilizers

• Educate communities on the risks of fertilizer use

• Collect and analyze data to determine the cause of the fish populations to decrease.

• Bring in more fish from other areas

Multiple Choice

How can people work to protect biodiversity?

• introduce non native plants

• monitor and conserve habitats

• encourage overharvesting

• use excessive fertilizers

Multiple Choice

Why are increasing CO2 levels in the atmosphere an environmental problem?

• Increasing CO2 levels decreases photosynthesis

• Increasing CO2 levels leads to higher global temperatures.

• Increasing CO2 levels causes an increase in nitrogen.

• Increasing CO2 levels decreases the amount of floods

Multiple Choice

Polar bears use ice shelves to hunt seal. What will most likely happen to the population of polar bears as a result of global warming?

• The polar bear population will decrease as their habitat is lost.

• The polar bear population will increase as they have more ocean to swim in.

• The polar bear population will adapt and the population would stay the same.

Multiple Choice

What is one disadvantage of using wind energy?

• noisy

• decreases pollution

• creates jobs

• wind doesn't get used up

Multiple Choice

What is an advantage of making fuel out of corn?

• loss of biodiversity

• reduce the use of non-renewables

• increase pollution

• higher cost

Multiple Choice

What is a disadvantage of burning coal for electricity?

• efficient

• easily accessible

• inexpensive

• produces pollution