A. choose the correct option. 1. which of these is composed of one kind of atoms only? a. element b. compound c. mixture d. all of these 2. which of the following is a property of metals? a they are generally solids at room temperature c. they have high melting and boiling points b. d. they normally have high densities all of the above 3. graphite is: a. a metal b. an alloy c. a form of carbon d. a form of iron

What is the full meaning of rfid on computer

Consider a population of snowshoe hares in montana. their fur color changes in response to changes in day length. during the long summer days, they have brown fur, but as the days shorten in the fall, their fur turns white in preparation for winter. then as the days get longer in the spring, their fur turns brown again. their fur coloration acts as camouflage from predators. as climate change brings warmer fall temperatures to montana, colder temperatures with snowfall are coming later in the year, and there may be less snowfall overall. as a result, the hares' fur color may be mismatched to the color of their surroundings, making them more visible to predators. which snowshoe hares would have a reproductive advantage in this changing environment? which snowshoe hares would have a reproductive advantage in this changing environment? hares that change color in response to day length, as the current population does hares with a mutation that prevents them from changing color from brown to white hares with a mutation that causes them to change color in response to temperature rather than day length hares with a mutation that prevents them from changing color from white to brown

The yellow river is also known as the huang he river? true or false