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Carbon dioxide removal (CDR) is a process in which carbon dioxide (CO 2) is removed from the atmosphere by deliberate human activities and durably stored in geological, terrestrial, or ocean reservoirs, or in products. [ 3 ]: 2221 This process is also known as carbon removal, greenhouse gas removal or negative emissions.
A carbon sink is a type of carbon pool that has the capability to take up more carbon from the atmosphere than it releases. Globally, the two most important carbon sinks are vegetation and the ocean. [3] Soil is an important carbon storage medium. Much of the organic carbon retained in the soil of agricultural areas has been depleted due to ...
Specialty. urology. [edit on Wikidata] Orchiectomy (also named orchidectomy) is a surgical procedure in which one or both testicles are removed. The surgery can be performed for various reasons: [1][2][3] treatment for testicular cancer. as part of gender-affirming surgery for transgender women. as management for advanced prostate cancer [4]
Emasculation is the removal of the external male sex organs, which includes both the penis and the scrotum, the latter of which contains the testicles. It is distinct from castration, where only the testicles are removed. Although the terms are sometimes used interchangeably, the potential medical consequences of emasculation are more extensive ...
Penis removal is the act of removing the human penis. It is not to be confused with the related practice of castration, in which the testicles are removed or deactivated, or emasculation, which removes both. Penis removal and castration have been used to create a class of servants or slaves called eunuchs in many different places and eras ...
Hair removal is the deliberate removal of body hair or head hair. This process is also known as epilatio or depilation. Hair is a common feature of the human body, exhibiting considerable variation in thickness and length across different populations. Hair becomes more visible during and after puberty. Additionally, men typically exhibit ...
Excretion. Mammals excrete urine through the urinary system. Excretion is elimination of metabolic waste, which is an essential process in all organisms. In vertebrates, this is primarily carried out by the lungs, kidneys, and skin. [1] This is in contrast with secretion, where the substance may have specific tasks after leaving the cell.
Deamination. Deamination is the removal of an amino group from a molecule. [1] Enzymes that catalyse this reaction are called deaminases. In the human body, deamination takes place primarily in the liver; however, it can also occur in the kidney. In situations of excess protein intake, deamination is used to break down amino acids for energy.