What causes the seasonal changes in temperature on earth? a. because of earth's elliptical orbit, the earth is closer to the sun during summer and farther from the sun during winter. therefore, the hottest months are during the summer, when earth is closest to the sun. b. the sun shines more brightly and emits more energy during the summer, and shines less brightly during the winter. c. the tilt of earth's axis as earth orbits the sun causes longer days and more direct sunlight during summer, and shorter days and less direct sunlight in winter. d. the buildup of greenhouse gases during the summer traps more heat in earth's atmosphere, causing higher temperatures at earth's surface. in the winter, a thinner atmosphere leads to greater heat loss from earth's atmosphere and lower temperatures.

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.

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?

Diffusion and osmosis are forms of passive transport