4 Is the chemical safe for 100% of the population? LD 50 Question 200Is the chemical safe for 100% of the population?
5 No. There is no safe limit/no threshold. LD answerNo. There is no safe limit/no threshold.
6 LD 50 Question 300 The LD50 indicates the ________. A) amount of toxicant it takes to kill half the populationB) lowest dose that kills any member of the populationC) lowest dose that kills 50 out of 1000 members of the populationD) lowest dose required to cure half of the populationE) lowest dose required to cure the entire population
7 A) amount of toxicant it takes to kill half the population LD answerA) amount of toxicant it takes to kill half the population
8 Hidden behind the box is the word? LD 50 Question 400Hidden behind the box is the word?
40 Timber Harvesting 500 Question Name two disadvantages of fire suppression.
41 Timber Harvesting 500 Answer Changes ecosystems: denser forestsLess diversityWeak trees don’t diePlants that germinate with fire don’t spread and any species dependent upon them don’t surviveLarger fires that cannot be controlled by humansAllows pests to spread
42 What does MSDS stand for? 100 Grab Bag QuestionWhat does MSDS stand for?
43 Material Safety Data Sheet 100 Grab Bag AnswerMaterial Safety Data Sheet
44 What amount of land worldwide is used for agriculture? Grab Bag 200 QuestionWhat amount of land worldwide is used for agriculture?a. Less than 5%b. Approximately 5-10%c. Approximately 20-30%d. Almost 40%e. Almost 50%