Place the following events in the order in which they occurred. Place the order number 1 through 7.
(nebula shrinks to form a spinning disk)
(gravity pulls gases to center of the disk)
(big bang)
(the planets form)
(gas and dust accumulate as a nebula)
(matter separates into galaxies)
(gas at the center of the disk becomes hot and dense enough for nuclear fusion to begin)

Classify the structures as homologous or analogous, depending on their structure and function.

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.

In which state was more than 100 billion tons of coal mined in 2005?