The correct answer is option a. responding to the environment.
The sweating is the release of sweat from the sweat glands. The sweating releases the water molecules on the skin surface as a result of increased body temperature due to changes in atmospheric temperature. The water molecule from the skin evaporates causing a decrease in body temperature.
The panting increase in the heat loss by respiration, hence, it is also a respond to the increased atmospheric temperature. So, both the conditions are associated with the temperature increase outside the body, here change in temperature act as stimuli and body react according to change.
Mature mammalian red blood cells lack nuclei, mitochondria and rough endoplasmic reticulum, they do not contain DNA and consequently, cannot divide. They also cannot synthesise RNA nor synthesise any new proteins, and consequently, have a limited lifespan. Mature red blood cells circulate for about 100–120 days in the body before they are removed by the spleen.
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Answer:
Studies have been conducted on synthetic products, including DDT and estrogen. The use of these synthetic products has been discontinued due to increased risk of cancer and other health concerns. Genetic engineering has increasingly been used in cattle, crops, and pharmaceuticals.
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