Answer:
the 1st answer is this
If progesterone is absent or levels are too low, irregular and heavy menstrual bleeding can occur. A drop in progesterone during pregnancy can result in a miscarriage and early labour. Mothers at risk of giving birth too soon can be given a synthetic form of progesterone to delay the onset of labour.
the 2nd answer is this
If a poor-quality egg is fertilized, either the embryo is unable to implant, or the embryo initially implants, but is unable to develop properly, resulting in a subsequent miscarriage.
the 3rd answer is this
An embryo with genetic abnormalities can form a blastocyst (embryo at day 5 or 6) and be transferred to the uterus but will later miscarry.
the 4th answer is this..
it will lead to anolvulation
the 5th answer is this
In case the blastocyst does not implant, the lining of the uterus (endometrium) makes arrangements for the developing blastocyst to connect to it through many internal changes. Without these changes, implantation will not occur, and the embryo sheds off during menstruation
Explanation:
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Each scientist made an important, but unrelated, contribution. Scientists built on the previous work of other scientists to make new discoveries. Most of the discoveries were made by chance and did not depend on prior knowledge.
Homeostasis is the regulation of internal body conditions such as temperature, sugar levels in blood, salt content etc. Without it many functions would become non-functional. If you take temperature for example without the control of our internal body temperature many metabolic reactions (enzyme-controlled reactions) would stop/ slow down. If the temp gets too high the enzymes denature and you wouldn't get an enzyme-substrate complexes forming. If the temp is too low the enzymes have a low kinetic energy and so don't collide with the substrate as much as at normal body temp. pH has similar affect but a change in pH will always denature enzymes.
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