Why are animals dependent on a continuous supply of energy from the sun?
Plants need the energy from the sun to grow. The small animals, such as rabbits, eat these plants to grow. Meat eaters such as hawks, prey on these rabitts, therefore connects hawks to the sun.
Because the hawks eat the rabbits, who eat plants, who use the sun... the hawks are inderrectly dependent on the sun's enegy. Even humans are in need of the sun, as vegetariands eat plants, and omnivors eat cows, who eat plants. Therfore, every living being on this plant is dependent on the suns energy in one way or another.
Animals need a continuous supply of oxygen because it obtains energy from their food. To acquire such energy from food, cells in animals require a steady supply of ATP in order to function. To produce this ATP, cellular respiration requires oxygen. Without ATP, cells and the organism will die so therefore, animals need a continuous supply of oxygen to survive.
What type of exercise depends solely on the energy that is stored in a muscle and not on oxygen intake?
All living things require a continual supply of energy in order to function. This energy is carried around our bodies within certain molecules, one of the best known being ATP*, which converts heat from the sun into a useable form for animals and plants.This ATP store is being constantly used and regenerated in cells via a process known as respiration, which is driven by natural catalysts called enzymes.
Energy supply must be sustainable and diverse. And energy needs to be used more efficiently. A sustainable energy supply, both in the short- and the long-term, is needed for promoting both economic development and people's quality of life, as well as protecting the environment. We also need a greater diversification of energy resources - if we are largely dependent on one fuel source, we risk price rises and supply disruptions. Energy is a precious resource…
Should humans remain dependent upon fossil fuels such as petroleum or should they focus their attention on alternativesources of energy?
Plant cells, like all cells, need a continuous supply of energy. If a cell stops respiring, it dies. Respiration is the release of energy from high-energy compounds, such as glucose. The energy is needed for many processes, such as all synthesis reactions, active transport, and movement of organelles.
Explain why every ecosystem must have some continuous supply of energy to survive but can do quite well without a continuous influx of nutrients?
The energy is needed for new growth, but the nutrients are recycled from the "old growth" from the older & diseased plants and animals dying. That puts their nutrients back into the system. So all it really needs is a constant supply of energy. Our biosphere, the Earth, is just a giant ecosystem that recycles all its nutrients, which can be considered as raw materials, that are used to build new life. If we look…