The Earth would not be able to sustain all living things without the Sun and its energy. The sun provides energy for the Earth in numerous ways. Solar energy converts to chemical energy, in the form of glucose as food for plants. Matter and energy are then transferred through trophic levels. Trophic levels are categories of all organisms that are defined by how the organism obtains energy. There are four trophic levels, primary producers, primary consumers deer, secondary consumers, and tertiary consumers. Primary producers can make their own food mostly through photosynthesis. Consumers are organisms that cannot make their own food and must eat other organisms to survive. For example, the sun converts solar energy in the form of glucose for grass. Rabbits will eat the grass for energy, then a snake will eat the rabbit, then a tertiary consumer like an owl will eat the snake. This is how the Sun’s energy is distributed throughout trophic levels and organisms in the Earth’s biosphere. Although the sun provides the Earth with energy to survive, it also gives off harmful energy to us called ultraviolet (UV) radiation. UV radiation is so dangerous because it can cause sunburns, skin cancer, and even eye damage. The severity of its effects are decreased because of the ozone layer, which is like a barrier in the atmosphere that absorbs most of the UV radiation. The ozone layer is important for our survival because without it skin cancer rates would increase exponentially, and photosynthesis would not be possible, meaning plants would die. Without plants, the food chain would collapse, leaving consumers of the trophic scale to starve. The ozone layer is what protects us from these harmful aspects of the sun’s output. Since the mid-1700s we have been using non-renewable resources such as fossil fuels, oil and coal. Fossil fuels have created air pollution and global warming which warms Earth’s surface and lower atmosphere affecting all living things. Because of global warming, we have melted ice caps in the Arctic which affect many arctic animals because they do not have any land to live on, slowly forcing them to extinction. This biodiversity crisis can be prevented if we use renewable energy sources such as solar energy. It can be harnessed using solar panels that convert sun rays into electricity. Solar energy can be used to contribute to a more sustainable biosphere and help prevent the biodiversity crisis.If we continue to use these non-renewable resources, the Earth will slowly warm up melting ice sheets which in turn would cause sea level rise and large floods, forcing animals to move from their habitats. The air will also become more polluted making humans sick. If no actions are taken towards sustainability like using renewable energy and green vehicles, Earth will soon share conditions similar to the inhospitable landscape of Venus. Of course Earth will not have a temperature of 462 degrees Celsius but it would have a much higher temperature and an increase of carbon dioxide in the atmosphere, like Venus’. If we do not create sustainability, our atmosphere will become similar to Venus’.