9 Which of the following describes using a physical change to separate a mixture
A Heating water to be able to dissolve more sugar in it.
B Adding vinegar to baking soda to produce bubbles from a gas.
C Melting a chocolate bar with almonds to remove the almonds.
D Burning wood to produce thermal energy to cook food.

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring

Which is not true of alpha radiation? o a. it increases the number of protons. o b. it has a positive charge. o c. it causes transmutation. o d. it is heaviest of the three types