<span>Asbestos is a naturally occurring mineral that has had many commercial uses
</span><span>during the last century, so it can be found in many building materials and other
</span><span>objects. Excessive exposure through inhalation can result in asbestosis, lung
</span><span>cancer, or mesothelioma (another kind of cancer). Asbestos seems to produce
</span><span>cancer through the physical interaction of its fibrous structure with living
</span>cells. Radon is a naturally occurring radioactive gas with no significant commercial application. Excessive exposure through inhalation can result in lung cancer. Radon produces cancer because it emits ionizing radiation which in turn <span>produces cancer upon sufficient exposure.</span>
Producers are organisms (usually plants) that utilize photosynthesis to produce their own food supply.
Photosynthesis is a process that uses photons from the sunlight to turn glucose and oxygen into carbon dioxide and energy. It basically is a process that uses light energy to make a usable food source, and it takes place in the cells of a chloroplast.
Chlorophyll is a green pigment found inside of plants' chloroplasts that absorbs light photons, allowing photosynthesis to take place.
Answer: Option D.
Technician A.
Explanation:
Oil residues on hoses, it's components or fittings indicate an area where refrigerant may be leaking.
An oil spot on the A/C hose is an indication of refrigerant leak in the system. Good oil levels are important for the system good performance. If the level of oil is to low, the compressor will not have lubrication and if it is too high, the heat exchange will affected which will lead to poor air conditioning performance. If a leak is formed on A/C hose, an oil spots that collect dirts will disappear. An refrigerant leak detector will help verify if there is no leak in the system.
So Technician A is correct.
Answer:
Plants take in carbon and let out oxygen.
Explanation:
Carbon and cellular respiration has to do with those cycles because plants which do cellular respiration as well as all living things take in either oxygen or carbon and let either one of them out.
Answer:
The effect is to promote a cycling of the elements, ensuring that they are used and later available again. This is an extremely important factor, as some elements are essential for living beings, and their constant use, without replacement, could lead to the extinction of species.
Explanation:Biogeochemical cycles are processes that occur in nature to ensure the recycling of chemical elements in the environment. It is these cycles that enable the elements to interact with the environment and living beings, that is, they ensure that the element flows through the:
- atmosphere
- hydrosphere
- lithosphere
- biosphere
The main biogeochemical cycles found in nature are the:
- water
- carbon
- oxygen
- nitrogen cycles
the answer is the effect of the biogeochemical cycle is it makes chemical elements reusable in nature.