The correct answer is C; It is the time of year when the temperature contrast is greatest between colliding polar and tropical air masses over the central United States.
Further Explanation:
In Texas, they have had tornadoes occur throughout the year. However, there is a greater risk for tornadoes in the springtime in Texas and other Midwest states. Since the risk is greater in the spring, this is why public service announcement are made.
Most cities in the United States have a tornado siren that is tested weekly in the spring and summer months. This will give warning to residents that they are to seek shelter immediately. If a tornado hits in the middle of the night, the alarms may not be turned on and this can be fatal and many people can be injured. It is important to learn about tornado safety before the bad weather starts.
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Fractional Crystallization
Answer:
Explanation:
y2-y1 over x2-x1
-1+1 over 2-4
0/-2= m=0
y=mx+b
-1=0(2)+b
-1=0+b
b=undefined
so basically the equation is undefined so you can say x=to whatever number
Answer:
In the ancient world porcelain was a necessity. For everyday use, it was used to create cups, plates, and other useful items. Exquisite, high-quality porcelains were usually housed as decoration or served as gifts. It was also used to create decorative statues and ornate trinkets for the higher classes.
Answer:
c. 4.5 billion years ago ... 3.9 billion years ago.
Explanation:
- The origin of the earth dates back to the time when the universe was formed and the formation of ll large star as the sun which itself is about 4.6 billion years old.
- And all this took place by the acceleration of the solar nebula disk, volcanic degassing and solar storm responsible for the creation of the secondary atmosphere in the earth that made life possible and thus oxygen was developed and gave rise to many species on earth.
- <u>The origin of the life forms on the earth in form of the single-celled microorganism took place in the hydrothermal vents in the oceans and they lived as 4.28 billion years ago, and this was relatively soon after the ocean formed around 4.41 billion years ago.</u>