The collared lemming is a small mammal that lives in the arctic tundra. Collared lemmings have white fur in winter and brown fur in summer. For most of the year, the arctic tundra is covered by snow. During this time, collared lemmings remain active in tunnels they make in the snow. The snow provides insulation and a place where the lemmings raise several litters of 3–5 offspring each year. The fur color of collared lemmings changes to white at a certain time of the year. 1. a. Explain how the change in fur color is an advantage to collared lemmings. When temperatures rise above freezing, snow melts, which causes changes in the collared lemmings’ habitat.

b. Describe two ways warming temperatures could cause the size of the collared lemming population to decrease.

c. Describe how fur color in the collared lemming population will likely change over time as temperatures increase because of climate change. Explain your answer using the principles of natural selection

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

Cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? view available hint(s) cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? direct microscopic counts filtration count culture serial dilution count culture plate count culture

What happens when the cell copies its chromosomes