which of the following came first? 1. writing 2. iron weapon 3. the neolithic revolution 4. the first cities

What is the speed of sound in water

The solstices and equinoxes, and the number of hours of daylight associated with each, are major factors in the seasons. use the drop-down menus to identify the month when each of these events occurs. the winter solstice in the northern hemisphere: an equinox in both hemispheres: the summer solstice in the northern hemisphere:

Nwhat way does renewable energy differ from nonrenewable energy?