Using solar energy will not have the negative effects you mentioned.
The reason is that solar energy is the energy radiated from the sun to the earth, as long as the thermal balance of the earth is maintained. No matter how much solar energy we use, we only reduce the part that is directly converted into thermal energy, so that the solar energy is first converted into electrical energy, then mechanical energy, thermal energy and in other forms, and finally in thermal energy. , then emitted into the universe. There is no obvious impact on the conservation of Earth's energy.
Unlike fossil fuels, solar energy (in the form of coal, oil, natural gas, etc.) accumulated on Earth over millions of years is released in a short period of time , which causes Earth to "fever".
Advantages
1. The sun directly provides resources of light and heat to the earth, and human life is inseparable from the sun.
2. Solar radiation maintains surface temperatures and is the primary driving force for water, atmospheric movement, and human activities on Earth.
3. Fossil fuels such as coal and oil, which are the main sources of energy for industry, are solar energy accumulated after biological fixation over historical geological periods.
4. Solar radiation is the main source of energy for solar cookers, solar water heaters, solar power stations, solar air conditioners, solar boilers, solar greenhouses and solar agriculture used in our daily life and production.
5. Sunlight on the skin will dilate the subcutaneous blood vessels, increase blood flow, increase the excretion and resistance of toxic substances.es, will increase the secretion of saliva and gastric juice, strengthen gastrointestinal motility and promote appetite. digestion.
6. The skin can also produce certain chemicals, such as ergot and cholesterol, to produce vitamin D in sunlight. This vitamin, along with calcium and phosphorus, is an important element of our bones.
Disadvantages
1. Body temperature increases when basking in the sun. The human body regulates body temperature through sweating. However, if the lost water is not replenished in time. sweat flow will be reduced, body heat cannot be dissipated, and it is easy to sweat, causing heat stroke. People suffering from heatstroke may experience dizziness, confusion, nausea and vomiting.
2. Ultraviolet allergy is an abnormal photodenaturation reaction caused by lightlight of the sun. There are two types of penetrating ultraviolet rays in the sun, UVA and UVB, which can directly reach the dermal layer of the skin, causing redness, swelling, burning and pain on skin exposed to the sun for a long period. Medically, we speak of solar dermatitis, also called ultraviolet allergy.
3. There is a layer of basal cells distributed over the epidermis of the body. These cells contain melanin, which is a tyrosine substance, the melanin will turn black and calm on the surface. of the skin, this gives the skin a dark brown appearance.
4. Long-term exposure to the sun will damage the skin structure, accelerate the aging and failure of skin cells, lead to loss of skin elasticity and the appearance of wrinkles.
5. When exposed to the sun and the temperature rises, the pores of the skin expand and the supplyblood t increases accordingly, and the work of the brain decreases. slow down, which will easily lead to fatigue and limb weakness.