Environmental Science Module 5-6

Type-1

Humans have which type of survivorship curve?

Tuna (tertiary consumer)

If you are concerned about the biomagnification of toxins, which one of the following would you most want to avoid eating?

K-selected species

Primates are examples of:

Herbivores

Secondary consumers would eat which one following?

r-selected

Species that have many offspring at one time are usually:

logistic

Species with limited resources usually exhibit a(n) ________ growth curve?

Primary succession

The 1980 volcanic explosion of Mt. St. Helens in the United States devasted the north side of the mountain and it's forests. The forests were demolished and replaced with volcanic debris that formed the new soil, free of any remnants of the previous ecosystem (such as seeds stored in the soil). Such an event would lead to which one of the following processes.

Nitrogen fixation

The conversion of nitrogen gas (N2) into ammonia (NH3) happens during which specific process?

@all of the above secondary consumers primary consumers primary producers

The loss of an apex consumer would impact which trophic level of a food web?

primary consumers

The mussels that live at the NW Eifuku volcano are examples of?

carrying capacity

The population size of a species capable of being supported by the environment is called its ________.

trophic level

The position of an organism along a food chain is known as its ________.

Producers

Use your knowledge of the relative energy content among trophic levels to answer the following question: A larger human population could be supported if all humans derived their food from which trophic level?

Overharvesting, exotic species introduction, habitat loss

What are the three greatest proximate threats to biodiversity?

Resource competition, predation, or disease for native species

What is one of the significant consequences of invasive species introduction into new ecosystems?

Human population growth and resource use

What is the primary driver of habitat destruction?

To return an area to its natural state before human impact

What is the primary goal of habitat restoration?

It increased biodiversity by restoring a keystone species.

What is the significance of the reintroduction of wolves to Yellowstone National Park?

Bush meat, leading to overharvesting and endangering some species

What is the term used for wild animals killed for food, and how has its commercialization affected certain species?

Reduced death rates

What single factor has most strongly contributed to the rapid population growth in the human population witnessed over the last 150 years?

Kyoto Protocol

What was the name of the first international agreement on climate change?

intertidal zone

Where would you expect to find the most photosynthesis in an ocean biome?

The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)

Which international treaty aims to prevent the international trade of endangered species?

Arctic tundras

Which of the following biomes is characterized by short growing seasons?

disease-causing microbe

Which of the following is a biotic factor?

A windstorm blew down trees in Minnesota's Boundary Waters Canoe Area on July 4, 1999.

Which of the following is an example of a weather event?

quadrat

Which of the following methods will tell an ecologist about a population's size and density?

Some bacteria are autotrophs There have been five mass extinctions preserved in the fossil record @All living things can be classified into one of four taxonomic domains Current rates of extinction are higher than background extinction rates

Which one of the following statements is false?

Logging a forest

Which one of the following would be described as anthropogenic?

Marine worm

Which one of the following would most likely live within the benthic realm of the ocean?

biomagnification

Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem?

overharvesting and exotic species introduction

Which two extinction risks may be a direct result of the pet trade?

Müllerian mimicry

Which type of mimicry involves multiple species with similar warning coloration that are all toxic to predators?

Alfred Wallace

During the middle of the 19th century, which scientist independently derived and proposed a theory of evolution that was similar to Darwin's?

density-independent

A forest fire is an example of ________ regulation.

salt water and fresh water

A key feature of estuaries is:

a new drug

A secondary plant compound might be used for which of the following?

mutualism

A symbiotic relationship where both of the coexisting species benefit from the interaction is called ________.

Keystone species

Biologists examined the effects of reintroducing wolves into Yellowstone National Park of the United States. They found that by preying on elk, wolves altered the foraging behavior of the elk; the elk spent less time browsing near streambanks. This allowed the regrowth of important vegetation, which had large positive impacts on the ecosystem at large. When a relatively small number of individuals, like wolves, have disproportionate impacts on the ecosystem, they are referred to as a...

islands

Exotic species are especially threatening to what kind of ecosystem?