Questions and Answers > The image below is to be used for questions 1-6. 1) Was there a time in the last 800,000 years when carbon dioxide was higher than it is today? YES or NO


Oklahoma State University • GEOG • GEOG-3033 The image below is to be used for questions 1-6.     1) Was there a time in the last 800,000 years when carbon dioxide was higher than it is today? YES or NO ...[Show More]

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D50: Toxicity for Different Substances Backgrggng Have you ever wondered how chemical companies determine which products are toxic enough to have the words CAUTION, WARNING or DANGER on their labels? To many people acute toxicity, lethal dosage value. median lethal dose. LDSO or "Lethal Dose, 50%" may sound familiar. In toxicology the definition of each of these terms is simply the amount of a toxic substance needed to kill at least 50% of the population being tested. In most cases, the population being tested is rats, fish or cockroaches. Ultimately, the LDSO of a substance is used to predict how much of the particular toxic material it would take to kill a human. By figuring out a product's LDSD. companies can determine how hazardous the chemical is to humans. The Environmental Protections Agency [EPA] categorizes LDSU by three methods of entry. Oral LDSO values are obtained when the population is fed a toxic substance. Dermal LDSO is obtained when the chemical is applied to the skin. Last. the inhalation LDSO is obtained by having the test population inhale the chemical. In a majority of chemicals, inhalation LDSO is most toxic and dermal is the least toxic. Dose response curves usually look like the graph shown at the right. LDSO is defined as the dose that is lethal 50% of the population Percent [ah~ha... L0 = Lethal Dose). By Population analyzing the LDSO for a compound Dad 50 and then comparing it to other known samples, scientists can get a good measurement ofhow dangerous it would be to the human 0 population. 100 l 10 100 Consider the LDSD graph of Drug X or": X (mukg') '— above. To find the LDSD for the compound, draw a horizontal line starting at 50% on the y-axis and ending on the graphed line, then drop a vertical dashed line from that point to the x—axis. Draw. The x-value at this point is the LDSO of Drug X. 1. How do chemical companies determine ifa product receives a CAUTION, WARNING or DANGER label? 2. What percent of the tested population is killed at LDSO? 3. What are the three methods of chemical entry into the body recognized by the EPA? 4

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Reading Test Bank 8 Reading Test Bank 8 Florida Test Prep Workbook Florida Test Prep Workbook Name Name Which best describes how character development and interaction advance the plot in How do the story elements in Passage 2 differ from its source material in Passage 1? Passage 2? Passage 2 takes place in a futuristic realm. Zach learns quickly. The cat is eager to teach. The reader expects them to go on Passage 2 has the playful feel of sudden escape . brainstorms together. Zach comes to realize he is dreaming. The cat notices this, and leaves before waking Passage 2 is built around a young protagonist. him . The reader expects Zach to seek sleep in order to have more brainstorms. Passage 2 has a suspenseful ending. Zach takes things as they come. The cat is friendly enough, but preoccupied. The reader expects Zach will have to think for himself if he wants more brainstorms. 10. What is similar about the worlds Alice in Passage 1 and Zach in Passage 2 experience? Zach relies on intuition. The cat prefers mathematical proof. The reader expects Zach to A They both have dreamlike qualities. feel his way toward the answers he's looking for. They both are created using technology. 7. Read this sentence from Passage 2. They both are exciting to the characters. "But Zach couldn't help noticing an oscillating wrinkle or hole in the sky above the cat's They both pose clear risk of physical harm. noggin, following him as he scampered up a hill," (paragraph 15) The suffix -tion can mean "the action of" or " the result of." Based on how the word oscillating is used in the passage, what is the best definition of oscillation? the result of moving back and forth around a point the action of altering the appearance of something the result of a change occurring in the atmosphere the action of an animal varying its speed as it runs Read these sentences from Passage 2. " " I'm not chatty,' Zach said . 'I'm conversational."" (paragraph 29) Which word can mean the same thing as both underlined words ? ming Company LLC. All Rights Reserved. earning Company LLC. All Rights Re A gossipy rambling wordy talkative STOP

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6. G. Armstrong is the new owner of Armstrong Hardware Store. He believes that he knows enough about accounting to prepare his first balance sheet, as illustrated below, before starting business on May 1, 20-Chapter 2 Test - Part 1 [Compatibility Mode] - Microsoft Word X File Home Insert Page Layout References Mailings Review View Foxit PDF a ? & Cut Times New Rom * 12 - A A Aa AaBbCc AaBb( AaBbC( AaBbCc] AaBbCc] AaBbCc] AaBbC AA Find En Copy BI U * abe x x' A y . A Change Bac Replace Paste Format Painter Emphasis Heading 1 Heading 2 1 Heading 3 1 Heading 4 1 Heading 5 1 Heading 6 Styles * Select Clipboard Font Paragraph Styles Editing L . 1 . 1 . 1 . . 1 . 1 . 1 . 2 . 1 . 3 . 1 . 4 . 1 . 5 . 1 . 6 . 1 . 7 . 1 . 8 . 1 . 9 . 1 . 10 . 1 . 11 . 1 . 12 . 1 . 13 . 1 . 14 . 1 . 15 . 1 . 16 . 1 . 17 . 1 18 . 1 . 19 . 1 1 . 11 . 1 C 6. G. Armstrong is the new owner of Armstrong Hardware Store. He believes that he knows enough about accounting to prepare his first balance sheet, as illustrated below, before starting business on May 1, 20-. G. ARMSTRONG 1 . 24 . 1 . 23 . 1 . 22 . 1 . 21 . 1 . 20 . 1 . 19 . 1 . 18 . 1 . 17 . 1 . 16 . 1 . 15 . 1 . 14 . BALANCE SHEET MAY 20- Assets Liabilities Accounts Receivable Bank Loan $ 8 000 -W. Mitchell $ 500 Accounts Payable Building Less: Mortgage CA CA 80 000 -J. Mahoney 3 000 30 000 50 000 11 000 Supplies 10 000 Office Equipment 5 000 Amstrong Hardware Store Equity 65 500 Household Furniture 4 000 76 500 Bank Balance 7 000 76 500 Page: 5 of 7 | Words: 1,263 English (U.S.) 1 3 100% + Type here to search 9 W AO. ENG 10:49 PM INTL 14/01/2020 19