Explanation:
when we are in heat our body companciates with surrounding by profusely sweating
we can control our internal temperature by escape in time from heat and
Exposing humans to potentially dangerous levels of radiation as used x-rays can be fatal. X-rays are able to denature and mutate genetic molecules such as DNA and RNA, hence it can be described as a mutagen. An ultrasound scan however uses sound to create an image - this involves no radiation and is hence far safer. It is one of the reasons why it is used to examine foetuses and babies when in the uturus. The ultrasound also allows the kidney's topography and underlying structures to be observed.
Answer:
Sympatric speciation
Explanation:
Reproductive isolation is the phenomena where two groups of organisms are not able to interbreed because of many mechanical, spatial or temporal barriers. It ultimately leads to formation of two different species. It can occur by allopatric speciation or sympatric speciation.
In allopatric speciation, the groups are not able to interbreed because they are geographically isolated. However sympatric speciation occurs in the same geography. The two groups inhabit the same area but are still not able to interbreed because gene flow is prevented between them. For example, in plants polyploidy can occur due to random mutation. Such a plant will not be able to mate with other plants of same species in the same area because of different chromosome number. Hence, it becomes reproductively isolated from rest of the plants in the area.
