This answer is false. They could change their life if they wished.
Answer:
i think it is due maybe a lack of food for animals on land.
Explanation:
It did not affect the water animals because they had food underwater. i don't know when it happened but just google your question.
Answer:
Leaves are the most important
Explanation:
Leaves are directly exposed to sunlight and contains chlorophyll which is the chemical that makes them green and is key in photosynthesis.
Answer:
Explanation:
Biomass refers to the organic matter from plants and animals.
It is also a source of renewable energy which can be used to produce electricity.
Energy from biomass orginates from the process of photosynthesis where green plants manufacture food for the ecosystem using carbon dioxide and sunlight.
Biomass has the following use:
It is widely available: Biomass can easily be sourced for. It is widely abundant in the environment.
It is inexpensive: Due to its wide availability, its source materials are very cheap and lies readily in the environment when we compare this to exploration for fossil fuels and mining for uranium.
It is carbon neutral: Since biomass constitutes a part of the carbon cycle, energy from biomass does not lead to climate change. Green plants use carbondioxide to manufacture their food and it is released back to the atmosphere when biomass is tapped.
It is environmentally friendly: The use of biomass as a source of energy does not affect the environment negatively. It is a clean source of energy.
It helps to reduce amount of waste: biomass energy helps us put wastes into a very good use.
Answer:
The criteria that we should adopt which selecting a fuel for our future energy demands shall be:
1) The yield of the fuel should be sufficient that it yields energy amount that is sufficient in it's quantity to meet the demand.
2) It should not release harmful gases into the atmosphere that may cause global warming or ozone depletion.
3) The disposal of the waste that remains after their utilization should not be harmful to the ground or environment in general.
4)The cost of the energy produced should not be excessively high.
5) The fuel should not be locally distributed that adds to the logistics and distribution charges it should be uniformly available.