Question

African penguins, which inhabit the coasts of southern Africa, were classified as an endangered species in 2010. Two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. Overfishing depletes the food supply of African penguins.

The best method to reduce the threat of overfishing would be to____


1. Construct a corridor to connect penguins and fish
2. Limit the harvest of particualr fish species
3. perform a population survey on several fish species



The risk of oil spills could be reduced by increasing the use of
1. Natural resoureces
2. Renewable energy sources
3. Nonrenewable energy sources



, which should help______ oil consumption
1. Increase
2. Decrease


. If an oil spill does occur, __________ could be used to help remove the oil so the ecosystem may more quickly recover.

1. Bioremediation
2.reforesation
3. recyclng

Answer 1

The correct answer to the first question is 2. Limit the harvest of particular fish species

-By limiting the harvest of the fish that penguins feed on will increase the biomass of that fish and the increased biomass of that particular fish can support the higher population of penguins.

The correct answer to the second question is -2. Renewable energy sources.

-Use of renewable source like solar energy reduce the pressure on the use of fossil fuels therefore it also decrease the risk of oil spills.

The correct answer to the third question is - 2. Decrease.

The use of a renewable source of energy decrease the oil consumption because consumption of renewable source of energy can be used as an alternative to oil consumption.

The correct answer to question four is- 1. Bioremediation

Bioremediation is the process in which the pollution is cleaned by using live organisms. Bioremediation by microbes is used to remove oil spills in oceans.