Answer:
B
Explanation:
It's the same thing that Pavlov did with the dogs, but instead of a can opener, he used a bell. The dogs drooled at the sound of the bell because they knew that the food was coming.
weather is above the surface of the earth instead if underneath, like earthquakes
Answer: Wind currents can affect the weather.
Explanation:
One effect of wind currents has to do with the weather, as the wind travels over water it collects moisture, the vapor in the air then condenses as it reaches colder climates and generally causes heavy rainfall.
Answer:
Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules. Having the atomic number 6, every carbon atom has a total of six electrons.
Explanation:
