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• some studies have shown that peppermint odor increases people’s mental sharpness, especially when they solve math problems. which best describes how this could be a valid scientific claim?
  
• your lab group is experimenting with the diffusion of molecules across a membrane. dialysis tubing is used as a model cell membrane because is it semi-permeable, allowing small molecules to cross the membrane, but not larger molecules, like starch. a starch solution is placed in the dialysis tubing and then the dialysis tubing is placed in an iodine and water solution. iodine is used as an indicator for the presence of starch. normally, iodine is a yellow-brown color (on the left), but in the presence of starch, it turns a deep purple (right). after observing the experimental setup for 20 minutes, the iodine solution remains brown, but the starch solution inside the dialysis tubing is purple and swollen. what cannot be concluded from the results?
  
• what default information appears on an electronic business card? check all that apply. name company logo job title company email address phone number website address
  
• what is the dramatic irony in this passage? the audience knows that nora and doctor rank are having an affair, but nora denies it. the audience knows that mrs. linde is jealous of nora, but nora does not know this. the audience knows that krogstad loaned nora money, but mrs. linde does not know this. the audience knows that doctor rank loaned nora money, but nora denies this.
  
• which geographical feature helped rome to develop trade routes with other regions? the mediterranean sea the danube river the black sea the rhone river
  
• the tsar was quick to agree to negotiate a peace treaty to end the russo-japanese war mainly because russia feared that japan would totally crush its forces. russia was running low on fighting resources. russia was winning but was unsure that it could continue to win. russia was fighting a strong military from afar.
  
• before jurors discuss a criminal case, the judge provides them with a list of instructions. explains which punishment fits best. chooses a foreperson. gives an opinion of the case.
  
• which describes the connection between a mechanical loom and a cotton gin? the gin was invented first to increase textile production, and then the loom produced more cotton. the loom and the gin were invented at the same time to improve textile production. the loom and the gin were invented at the same time to improve cotton production. the loom was invented first to increase textile production, and then the gin produced more cotton.
  
• how did roosevelt use the four freedoms speech and the atlantic charter to define the war for americans?
  
• describe in detail the most memorable visual aid you've ever seen used in a presentation. why does it stick out in your memory? how was it used to illustrate a point? what did you learn from this experience?