<span>A concave mirror and a converging lens will only produce a real image if the object is located beyond the focal point (i.e., more than one focal length away). The image of an object is found to be upright and reduced in size.</span>
In the holes there is brass "fingers" that grab the plug prongs when you plug it in. So it's made out of brass or copper.
they need the Sun's energy in order to produce food
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There are several starting ingredients that are required for starting the process of photosynthesis. The most important are sunlight, water, carbon dioxide and certain minerals. Sunlight helps in building up the optimum temperature that is required to start the process of photosynthesis. Water is an important raw material that helps to absorb the carbon dioxide from the air. It also directly influences the opening and closing of the stomata. Carbon dioxide on the other hand is one of the most important raw material that helps to make glucose via the process of photosynthesis.</span>
Your eyes send images to your brain. It is hard to explain for me but your eyes are a big role in helping.
Hope this helps :)