Answer:
While sunlight is the energy source, the greatest force propelling the water cycle is gravity. Gravity is the force of attraction between two objects, and Earth's gravity pulls matter downward, toward its center. It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water.
Explanation:
Answer: Option (A) is the correct answer.
Explanation:
It is given that the unknown substance is solid at 15 degree celsius. When further heated then heat energy breaks the bond between molecules of the solid.
As a result, temperature remains constant until all the bonds are broken down to convert the solid into liquid.
Hence, the constant 17 degree celsius temperature shows that the solid is melting and after it completely melts then it converts into liquid at 23 degree celsius.
Thus, we can conclude that the statement its melting point is 17 °C, is correct about the unknown substance.
Answer:
The system of measurement that is used through out the world is know as <u>International System of Units or, in French, Système International (SI).</u>
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Explanation:
In order to describe motion, scientists use SI units to describe the distance an object moves.
<u>In system international (SI) or metric units, motion involves the units meters and seconds. </u>
Due to the consistency of units used the information described by one individual in a country is easily understandable by someone else in a different country .
For example: if someone describe the speed of an object to be 30 meters per second, anyone using the same units can understand this. whereas , the use of units such as foot per second is understandable to only small number of countries
C) no till farming I believe is the correct answer
