Students observe woodchucks in their area. In the summer, students observe that woodchucks eat a lot of plants. In the winter, students observe that woodchucks live in their burrows and are seen less often. The picture shows a woodchuck in its burrow.
Which change that helps a woodchuck survive the winter did students observe?
O A Woodchucks migrate to survive the winter.
O B. Woodchucks hibernate to survive the winter.
O c. Woodchucks eat a different kind of food in the winter.
O D. Woodchucks grow thicker fur to keep them warm in the winter.

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

The energy needs of a human population are not affected by

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.