Which describes pumice and obsidian? a. both pumice and obsidian are coarse-grained intrusive igneous rocks. b. pumice is a coarse-grained extrusive igneous rock, while obsidian is a fine-grained intrusive igneous rock. c. pumice is a fine-grained intrusive igneous rock, while obsidian is a coarse-grained extrusive igneous rock. d. both pumice and obsidian are fine-grained extrusive igneous rocks.
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Biology, 21.06.2019 20:30, jpimentel2021
Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time
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Biology, 21.06.2019 21:00, Strick1530
Idont understand by supporting the plant and holding the leaves up to the light. question 3 options: tap or fibrous root flower petals herbaceous or wood stems leaves with stomata
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In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.
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Which describes pumice and obsidian? a. both pumice and obsidian are coarse-grained intrusive igneo...
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