CHAPTER 3 REVIEW

1 a. Arrange from smallest to largest

• Biosphere• Organism• Population • Ecosystem• Community

1BWhich of the below is a Biotic or Abiotic factor

• _____sunlight• _____Temperature• _____The decomposition action of fungi• _____ soil• _____rain• _____duck billed platypus

Symbiosis is a close relationship between two organisms. Tell if the below is parasitism, mutualism, commensalism

• _____tick and dog• _____lichens (algae and fungi)• _____mistletoe and oak trees• _____shark and remora fish• _____tapeworm in a mammals gut• _____bees and a specific flower.• For bees and flowers, how do the two

benefit from each other?

2.

• A population of wombats on a new island is growing at a rate of 2% per year. How may years will it take for the population to double.

• HINT do not change 2% to a decimal

3. pH

• How may more times alkaline is a pH of 10 than a pH of 8.

4. nutrients

• What are the “big three” elemental nutrients

5. Half lives

• A rule of thumb is that it takes about 10 half lives for a radioactive sample to decay to a safe level. Plutonium -239 has a half life of about 24,000 years. How long must it be stored safely?

•

6 and 7 What is the name of this equation? 7. What is the exact name of the organic matter formed.

8.

• Most of the energy (~90%) in an incandescent light bulb is lost in the form of _________.

• Hint. 2nd law of thermodynamics.

9. In a recent study which involved using mice to determine the LD 50 (lethal dose of a sample population) there were 150 mice exposed to a certain chemical. Out of those 150 mice, 82 of them were found to have cancer. What percentage of mice ended up with cancer?

10. A population of elk numbers 150. If the population grows by 20% in

one year; How many elk will there be next year?

Humans

Chickens

Corn

Energy Flow: Biomass Energy Pyramids

11. Only a fraction of the available energy is used for growth and incorporated in the plant or animal itself at each stage of the food web

.In this example only 10% of the biomass and energy is passed up the food chain.1.3500 kg of corn will support how many kilograms of chicken?2.How many kilograms of humans can be supported by the mass of chickens from #1?

12.

• What is 30 percent of 200?

13 Bonus

• The TW Garner food company makes Texas Pete hot sauce. What state if the sauce made in?