Low air pressure results in this type of weather.
What is cloudy skies, overcast, or rainy?
Wax melting is a _________ change.
What is a physical change?
These two systems work together to provide the body with nutrients
What is the digestive system and the circulatory system?
This type of change yields a new substance
What is a chemical change?
This system produces red blood cells
What is the skeletal system?
A swift moving air current located over North America that influences weather; it flows from west to east.
What is the jet stream?
A change in size, shape, or state of matter is a _____ change.
What is a physical change?
This system involves the nerves, spinal cord, and brain
What is the nervous system?
Burning a piece of paper is a _____ change.
What is a chemical change?
These two systems work together to remove waste gas
What is the respiratory system and the circulatory system?
The unusual warming of the Pacific Ocean
What is El Nino?
A warm ocean current that causes an increase in land temperatures near the Atlantic Ocean.
What is the Gulf Stream?
Brackish water is a mix of ______ and ______ water.
What is salt water and fresh water?
heart, blood, and Blood vessels
What is the cardiovascular system?