Hannah H

1. What is sustainable living? How could someone achieve sustainable living? Do you personally think you could achieve this?

It is a lifestyle that attempts to reduce an individual's or society's use of Earth's natural resources.

Recycle more, walk or take public transportation.

I could if I try. the real question is will I

2. Fossil fuels vs Renewable energy- compare and contrast the two forms of energy. Look at the cost financially to humans and environmentally to the Earth. Convince someone to conserve energy.

3. Recycle- what does it mean to recycle? Why should someone recycle? How long does it take for these to decompose?

Tin can- 50 years

Glass Bottle- 1,000,000 years

Disposable Diaper- 500-800 years


Paper- 1 month

Plastic Grocery Bag-

Styrofoam Cup- never

Aluminum Can- 200-500 years

Cotton T-shirt- 1-5 months

Apple Core- 2 months

Did any of these surprise you? no

4. What is the Great Pacific Garbage Patch? What can we do here in Iowa to help decrease it, is it even possible?

It is a collection of marine debris in the North Pacific Ocean.

We can recycle more.

5. Define 2 Biomes of the world, define an ecosystem found in each and explain the Biotic and Abiotic factors involved.

Temperate forest-coniferous forest-biotic factors; coniferous trees, animals, ferns, and bushes-abiotic factors; wind, rain, and snow.

6. Choose any Biome; create a food chain defining the primary producer, primary consumer, secondary consumer, tertiary consumer, quaternary consumer, herbivore, omnivore, carnivore, scavenger, and decomposer.

Temperate forest-

primary producer-grass

primary consumer-rabbit

secondary consumer- snake

tertiary consumer- fox

quaternary consumer- cougar





7. What are Dead Zones in the Gulf of Mexico? What causes this situation? What can be done to help stop them?

They are areas in the world's oceans and lakes with low oxygen caused by excessive pollution. People can reduce nitrogen emissions into water and the use of fertilizer.

8. Define Keystone Species, give 2 examples; one a top predator and one not a top predator. Explain how their absence would affect the ecosystem

A species whose absence from an ecosystem would cause a significant change in the community.

Prairie dogs- the soil and water quality would drop.

Wolves- their absence would lead to prey populations rising and becoming too large.

9. Competitive Exclusion- define it and give 2 examples.

When two species compete for the same resources one will always outcompete the other causing local extinction.

Red squirrels and grey squirrels

Balanus and Chthamalus

10. Define the following terms and give 2 examples of each

Coexistence- when two species live in the same habitat but divide the resources so each can survive ()

Parasites- organism that feed off their prey but do not kill the prey or may never kill their prey (tapeworm, fleas)

Mimicry- a phenomenon through which one species has evolved to assume the appearance of another (monarch butterfly, robber fly)

Mutualism- an interaction between individuals of 2 species that is beneficial to both (oxpecker and rhino, yucca moths and yucca plants)

Commensalism- an interaction between individuals of 2 species where one species benefits and the other is neither harmed or helped (atlantic puffin and rabbits, hermit crabs)

11. Explain the Carbon Cycle and how do humans affect this cycle?

The series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

12. What is global dimming? Where does it usually affect and why is it a problem?

The decrease in the amounts of solar radiation reaching the surface of the Earth.

It affects everywhere.

It causes smog and acid rain.

13. Explain the Greenhouse Effect. How do the carbon cycle and the greenhouse effect go together?

A process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions.

carbon released in the air help contribute to the greenhouse effect.

14. Define endangered species and give an example. How does a species become endangered? What if this species was a keystone species? What would happen to the current ecosystem? Why should humans care about the endangered species?

A species of animal or plant that is seriously at risk of extinction.

Amur leopard.

Overhunting or loss of habitat.

The ecosystem would be thrown out of balance.

We would lose food sources and have more problems with pests that were previously eaten.

15. Invasive Species- define invasive species; give 2 examples how do they affect the ecosystem they are now invasive too. How did the invasive species arrive to their new ecosystem?

Plants, animals, or pathogens that are non-native (or alien) to the ecosystem under consideration and whose introduction causes or is likely to cause harm.

They take up living space and displace native species.

16. At one time rainforest covered 14% of the Earth’s land surface; today rainforest only cover 6% today; why should a person care about the lost rainforest ground? Why are the rainforest being cut down? What would happen if they all disappeared?

rainforest hold a lot of carbon and make oxygen. The logs are used for construction.

Many species would go extinct and there would be much more carbon in the atmosphere.

17. Why is human overpopulation a major concern? Explain all the resources needed for a human to sustain life.

It depletes resources and causes pollution.

food, water, shelter,

18. Pesticides- what are they, how do they adversely affect the environment, and how does this create problems with the genetic diversity in crop production.

Any substance used to kill, repel, or control certain forms of plant or animal life that are considered to be pests. They kill good bugs too and can contaminate water supplies. they kill the bugs that would pollinate the crops further away

19. Interpret this quote. “If the bee disappeared off the face of the Earth, man would only have 4 years left to live.” Maurice Maeterlinck, The Life of the Bee

bees pollinate many plants that humans grow and eat. if they disappeared we would lose too many important crops

20. It is the year 2070 and you are having a conversation with your grandchildren about how the environment has changed since you were young- give a prediction of how the Earth would look to them.

"When I was a kid there were many cars that used fossil fuels. The gasses smelled pretty bad. They weren't powered by wind like they are now. There were fewer trees too."