Humans might build drainage systems.
Humans might extract more water from the ground.
Human behavior does not change because of the water cycle.
Answer: Humans might extract more water from the ground.
Explanation:
Humans may face the situations of unavailability of water supply. Majority of the human population is dependent upon the source of water like oceans, lakes, rivers, ponds and wells for their water supply.
But in the scarcity of water from the drainage supply by the water body human population should search for a relevant alternative such as groundwater. Groundwater is the underground reservoir of water. The water in the groundwater reservoir accumulates from the sources such as rainfall, snow melting, river and oceanic water.
Humans should search for groundwater reservoir for compensating the scarcity of water.
The difference between light reflection and refraction is simple. In reflection, the light ray striking the plane returns to the originating source or medium as the waves spring off the surface. in refraction, the waves go through the surface and it alters their speed and direction.
Reflection is the bouncing back of light when it strikes a smooth surface. Generally occurs on shinny surfaces that only allow rebounding of light without permitting penetration through it. In this process, light bounces back and returns back in the same direction.
Refraction is the bending of light rays when it travels from one medium to another. This occurs in transparent surfaces that allow bending of the ray to a different medium.
In this process, light changes path i.e travels from one medium to another.
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The reason why the mass has increased is because The magnesium reacted with the oxygen around is and combined together to make the compound MgO.
Antoine Lavoisier discovered in 1789 that mass is neither created nor destroyed in chemical reactions, which led to the formulation of the Law of Conservation of Mass.
That is to say, the mass of any one element at the start of a reaction will be equal to that element's mass at the conclusion of the reaction. The overall mass will remain constant over time in any closed system if we take into account all reactants and products in a chemical reaction.
Because naturally occurring elements are extremely stable under the circumstances present on the Earth's surface, the Law of Conservation of Mass is valid.
Therefore, The reason why the mass has increased is because The magnesium reacted with the oxygen around is and combined together to make the compound MgO.
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★ C = 1, H = 6, O = 5
★ C = 6, H = 6, O = 1
★ the number of molecules.
Answer:
The subscripts in a chemical formula represent two things:
Explanation:
The subscripts in a chemical formula represent two things:
1. The number of atoms: The subscripts indicate the number of atoms of each element present in a compound. For example, in the chemical formula H2O, the subscript "2" indicates that there are two hydrogen atoms in each water molecule.
2. The number of molecules: The subscripts can also represent the number of molecules in a compound. However, it's important to note that this is not always the case. In most cases, the subscripts in a chemical formula specifically indicate the number of atoms rather than the number of molecules.
To clarify the examples given:
- The statement "★ the number of atoms" is correct. Subscripts in a chemical formula do represent the number of atoms.
- The statements "★ C = 1, H = 6, O = 5" and "★ C = 6, H = 6, O = 1" are not relevant to the question as they do not pertain to the role of subscripts in a chemical formula.