A community of hares on an island has a population of 50 when observations begin at t=0. The population for

$$t \geq 0$$

is modeled by the initial value problem

$$\frac { d P } { d t } = 0.08 P \left( 1 - \frac { P } { 200 } \right)$$

, P(0)=50. a. Find and graph the solution of the initial value problem. b. What is the steady-state population?

What evidence from modern mitochondria and chloroplasts supports the endosymbiotic theory?

What is a batholith? In what modern tectonic setting are batholiths being generated?

QWERTY. What do those letters mean to you? The next time you sit down at a computer, look at the keyboard. You will find these six letters lined up on the left side of the top row of letters. You will also see that many of the alphabet's most commonly used letters-such as $e, i$, and $o$-can only be typed by moving your fingers away from the center row, which is where your fingers naturally fall. (1) The QWERTY keyboard indisputably lacks efficiency. (2) Did we get duped into using it? Today, typing is usually faster than writing by hand. (3) We could infer from this that our current keyboard design was created to maximize speed. (4) But this would be a fallacy. In fact, the keyboard was designed to be slow!

Originally, the typewriter was invented to provide readable, standardized print, not to increase the speed of writing. In the late 1860s, Christopher Sholes invented the first commercial typewriter. There was a problem, though: The typewriter keys tended to jam when people typed too fast. So Sholes arranged a keyboard so that letters commonly typed together, such as $t h$ and $s h$, could not be hit at the same time. Thus, the QWERTY arrangement was born. However, as typewriter design improved, keys stopped jamming. (5) In today's world, it is easy to refute the claim that the QWERTY keyboard arrangement is the best one. So why is it still in use?

The answer lies, at least in part, in a contest that took place in 1888. Mrs. L. V. Longley, head of a Cincinnati typing school, sponsored a race between her star pupil, Frank McGurrin, and rival typist, Louis Taub. (6) Mrs. Longley had developed a ten-finger typing method based on the QWERTY keyboard, and she became an apologist for the arrangement. McGurrin used a QWERTY keyboard; Taub did not. (7) In a highly publicized event, McGurrin soundly defeated Taub, substantiating the superiority of the QWERTY arrangement in the eyes of the public. (8) The truth is, however, that the contest was something of a red herring. The superiority of McGurrin's typing was probably a result of the "touch-typing" system he had developed, which enabled him to type without looking at the keys. Whatever its history, there is still strong resistance to changing the QWERTY keyboard. One reason is that most people are used to this keyboard. Those who already know how to type do not want to have to relearn this skill to accommodate a new arrangement. Also, companies that produce keyboards have a considerable financial investment in the current letter positions. (9) Not everyone has been dissuaded from trying to improve this keyboard design, however. Dr. Anton Dvorak patented a keyboard that puts all of the vowels on the line where we usually place our fingers. In one experiment, he found that a person's fingers traveled only one mile during a typical day's typing on his keyboard. In contrast, a person's fingers traveled at least sixteen miles when typing on the QWERTY keyboard. (10) These results imply that the Dvorak arrangement is superior. So the next time your fingers are tired from keyboarding, think of Dr. Dvorak. Perhaps someday his arrangement will give those fingers a rest. Each sentence below refers to a numbered sentence in the passage. Write the letter of the choice that gives the sentence a meaning that is closest to the original sentence.

These results $\rule{2cm}{0.15mm}$ that the Dvorak arrangement is superior. a. reason b. prove c. suggest d. conclude

How old is our species, the modern humans known as Homo sapiens sapiens?

What type of analyses have scientists used to group modern organisms into domains?

A town parade included modern and antique cycles. The modern cycles had two wheels and the antique cycles had three wheels. Altogether there were 64 wheels on the 28 cycles. How many of the cycles had three wheels?

Use online resources to work on this chapter's questions. Please note that website information changes over time, and these changes may limit your ability to answer some of these questions. Clothing retailer Abercrombie & Fitch enjoyed phenomenal success in the late $1990$s. Between $1996$ and $2000$, its sales grew almost fourfold-from $\$ 335$ million to more than $\$ 1.2$ billion-and its stock price soared by more than $500 \%$. However, in $2002$, its growth rate had begun to slow down, and Abercrombie had a hard time meeting its quarterly earnings targets. As a result, the stock price in late $2002$ was about half of what it was $3$ years earlier. Abercrombie's struggles resulted from increased competition, a sluggish economy, and the challenges of staying ahead of the fashion curve. From late $2002$ until November $2007$, the company's stock rebounded strongly; however, its stock price declined during the $2008$ economic downturn. Its stock price rebounded until late October $2011$, when it began a downward trend again. Its stock price started to rise again in early $2013$, but has been on a downward trend since that time. Questions remain about the firm's long-term growth prospects. However, the company has been cutting costs and improving productivity with its focus on the supply chain. In addition, it has been actively repurchasing shares, indicating that management believes its shares are undervalued. The company continues to steadily expand stores abroad while closing underperforming domestic stores.

Given the questions about Abercrombie's future growth rate, analysts have focused on the company's earnings reports. Financial websites such as Yahoo! Finance, Morningstar, and MSN Money provide information on the company's recent earnings history along with a summary of analysts' earnings forecasts.

Have analysts made any significant changes to their forecasted earnings for Abercrombie & Fitch in the past few months? Explain.

How do modern humans differ from other primate forms?

Evaluate the biological and environmental influences on schizophrenia.

Why was the penny created, and does it still have a purpose in the modern economy?

QWERTY. What do those letters mean to you? The next time you sit down at a computer, look at the keyboard. You will find these six letters lined up on the left side of the top row of letters. You will also see that many of the alphabet's most commonly used letters-such as $e, i$, and $o$-can only be typed by moving your fingers away from the center row, which is where your fingers naturally fall. (1) The QWERTY keyboard indisputably lacks efficiency. (2) Did we get duped into using it? Today, typing is usually faster than writing by hand. (3) We could infer from this that our current keyboard design was created to maximize speed. (4) But this would be a fallacy. In fact, the keyboard was designed to be slow!

Originally, the typewriter was invented to provide readable, standardized print, not to increase the speed of writing. In the late 1860s, Christopher Sholes invented the first commercial typewriter. There was a problem, though: The typewriter keys tended to jam when people typed too fast. So Sholes arranged a keyboard so that letters commonly typed together, such as $t h$ and $s h$, could not be hit at the same time. Thus, the QWERTY arrangement was born. However, as typewriter design improved, keys stopped jamming. (5) In today's world, it is easy to refute the claim that the QWERTY keyboard arrangement is the best one. So why is it still in use?

The answer lies, at least in part, in a contest that took place in 1888. Mrs. L. V. Longley, head of a Cincinnati typing school, sponsored a race between her star pupil, Frank McGurrin, and rival typist, Louis Taub. (6) Mrs. Longley had developed a ten-finger typing method based on the QWERTY keyboard, and she became an apologist for the arrangement. McGurrin used a QWERTY keyboard; Taub did not. (7) In a highly publicized event, McGurrin soundly defeated Taub, substantiating the superiority of the QWERTY arrangement in the eyes of the public. (8) The truth is, however, that the contest was something of a red herring. The superiority of McGurrin's typing was probably a result of the "touch-typing" system he had developed, which enabled him to type without looking at the keys. Whatever its history, there is still strong resistance to changing the QWERTY keyboard. One reason is that most people are used to this keyboard. Those who already know how to type do not want to have to relearn this skill to accommodate a new arrangement. Also, companies that produce keyboards have a considerable financial investment in the current letter positions. (9) Not everyone has been dissuaded from trying to improve this keyboard design, however. Dr. Anton Dvorak patented a keyboard that puts all of the vowels on the line where we usually place our fingers. In one experiment, he found that a person's fingers traveled only one mile during a typical day's typing on his keyboard. In contrast, a person's fingers traveled at least sixteen miles when typing on the QWERTY keyboard. (10) These results imply that the Dvorak arrangement is superior. So the next time your fingers are tired from keyboarding, think of Dr. Dvorak. Perhaps someday his arrangement will give those fingers a rest. Indicate whether the statements below are TRUE or FALSE according to the passage. The QWERTY keyboard was originally designed to maximize the typist's speed.

Why is the hunger drive not purely biological?

Answer the following questions using notes in your Analyze a Map worksheet From looking at the map, how did the physical environment affect how the Canarsie lived? Why do you think the name of Penhawitz’s community disappeared from maps after this one? How would this map be different if the Canarsie people had created it?