How have arctic tundra herbivores adapted to their ecosystem? (Select all that apply.) They can change their internal temperatures when needed.
They migrate to the south during the cold months.
They have extra fur to protect against the cold.
They can survive on short plants, mosses, and lichens.

Select the correct answer. what is the nature of the se-cl bond in a molecule of selenium chloride (secl2) if the electronegativity value of selenium is 2.55 and that of chlorine is 3.16?

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.