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three forms of water?
What is humus?
Name any two measures that were used to measure short distances in earlier times.
What is the unit of mencuring time
Answers
Answer:
1) Water can occur in three states: solid (ice), liquid, or gas (vapor).
Solid water—ice is frozen water. When water freezes, its molecules move farther apart, making ice less dense than water. ...
Liquid water is wet and fluid. ...
Water as a gas—vapor is always present in the air around us.
2)in soil science, humus denominates the fraction of soil organic matter that is amorphous and without the "cellular cake structure characteristic of plants, micro-organisms or animals". Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients.
3) ruler
To measure short distances, use a measuring stick called a ruler, 4 to 5 m long. You can make your own by following the steps below. A ruler is particularly useful for measuring horizontal distances on sloping ground.