| Group 23 | Group Name : Group 23 |
| Group Members : Koh Pei Pei, Lee Sok Fung, Oh Jhing Ruong |
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| 1.
Yes, if more water is introduced into the environment, it will cause flooding. Obtaining purified hydrogen requires a lot of energy therefore it is expensive and at the same time, time consuming to do so. It is also difficult to store and transport hydrogen because it occupies a lot of space. Thus, it is impractical to use hydrogen as a fuel. Hydrogen is highly flammable and may ignite a fire easily. |
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| 2.
Energy from the Sun is essential for living things on Earth as it provides warmth and energy. Just like fossil fuels, which provides electricity to carry out daily activities on Earth. Fossil fuels come from the decomposition of living things in a food cycle, and they obtain energy from plants. Plants photosynthesize in the presence of sunlight. |
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| 3.
It is an expensive process and it uses a lot of energy. It uses fossil fuel to produce electricity for the electrolysis process of water. Burning of fossil fuels produces harmful pollutants such as sulfur dioxide that may lead to acid rain, which is harmful to the environment. |
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