In which step(s) did a chemical change most likely occur?
Investigations were carried out in a science lab to
explore the topic of chemical and physical changes.
Investigation A
Step 1. Add 5 tsp. salt to 100 ml warm water and stir until
most or all of the salt is no longer visible.
Step 2. Heat the salt solution on a burner until only a
white solid remains.
O Investigation A, Step 1 and Investigation B, Step 1
O Investigation A, Step 2 and Investigation B, Step 2
O Investigation A, Step 2 only
O Investigation B, Step 2 only
Investigation B
Step 1. Mix 10 tsp. white sugar into 100 ml water and stir
until most or all of the sugar is no longer visible.
Step 2. Heat the sugar solution on a burner until the
solution thickens and turns brown.
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What causes the phospholipids to organize themselves the way they do

The accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. the accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. chimpanzees and gibbons are the most closely related the chimpanzee's closest surviving relative is humans orangutans are the primates least closely related to chimpanzees old world monkeys and gibbons are the most closely related

What is the farthest destination to date for a human spaceflight mission?