Solar Radiation and Energy

The source of energy in an ecosystem is the sun. The solar energy is trapped by green plants and converted into biologically useful form i.e., carbohydrates. All the consumers depend either directly or indirectly on green plants for nutrition. The energy flow in an ecosystem is always unidirectional i.e., solar radiation to producers to herbivores to carnivores.

In an ecosystem, green plants trap solar energy and convert it into sugars which are utilised by all the living organisms and also passed on to successive trophic levels. Thus, the correct answer is option A.

An ecosystem consists of living things like producers, consumers and decomposers and nonliving things like air, water, land. The ultimate source of energy in an ecosystem is sun. The plants in presence of sunlight synthesize its food. From plants, the energy is transferred to primary consumers and secondary consumers and decomposers. 

Naturally subsidized solar-powered ecosystems are those that rely on the sun as the primary energy source but are also supported by natural energy flows like tides, wind, or flowing water.

• The sun is made up of about 80% hydrogen, 20% helium and only 0.1% other elements. 
• Sun is the most important source of energy. The sun is the source of life on our planet Earth and, directly or indirectly, is the fuel for most renewable systems. Photovoltaic and solar thermal systems, as well as solar thermal power stations, convert solar irradiation directly into useable energy.
• Hence Multinational source of energy is the sun.
• So, the correct answer is 'Sun'.

Sun is the ultimate and major source of energy which is required and fulfills the need of the world. photosynthesis and chemical bonds are performed and formed respectively by the sunlight due to which all the necessary reactions occur leading to the completion of all the processes. Green plants require sunlight to produce organic food in which water and gases mix with sunlight to produce their food.

The lag in daily temperature occurs because the Earth's surface continues to receive and store heat even after the sun has passed its peak intensity at solar noon. The maximum temperature is typically reached a few hours after the maximum solar radiation.

A fuel-powered ecosystem is one where the primary energy input is not solar radiation but rather the combustion of fossil fuels or other concentrated chemical energy sources, often seen in industrial or urban settings.

Solar radiation is radiant energy emitted by the sun. The land being darker and less reflective will absorb great deal of solar radiation and will have significant increase in temperature.

 A satellite orbits Earth when its speed is balanced by the pull of Earth gravity. Without this balance, the satellite would fly in a straight line off into space or fall back to Earth.

The greenhouse effect is the process by which radiation from the sun is trapped by greenhouse gases in the Earth's atmosphere, warming the planet.

Biomass contains stored energy. That's because plants absorb energy from the sun through the process of photosynthesis. When biomass is burned, this stored energy is released as heat. Burning biomass releases carbon dioxide.

Heat radiations from the sun are absorbed by the earth's surface and are reflected back to the atmosphere which is the cause of greenhouse effect.

The greenhouse gases absorb more of infrared rays and emits heat and this heat cannit be escaped from the atmosphere-resulting in heating up of the earth surface thereby resulting in global warming and hence greenhouse effect.