Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
Oxygen and nutrients from the mother's blood are transferred across the placenta to the fetus through the umbilical cord. This enriched blood flows through the umbilical vein toward the baby's liver. There it moves through a shunt called the ductus venosus. This allows some of the blood to go to the liver.
A small amount of the blood continues on to the lungs. Most of this blood is shunted through the ductus arteriosus to the descending aorta. This blood then enters the umbilical arteries and flows into the placenta. The oxygen rich blood then returns to the fetus via the third vessel in the umbilical cord (umbilical vein). The oxygen rich blood that enters the fetus passes through the fetal liver and enters the right side of the heart.
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D) A & B
it protects the seed against any damage or harmful weather conditions and also helps in dispersal of the seed through different means.
If your eyes are exposed to a microorganism, the first thing you should do is to <u>Flush your eyes with water for at least 10-15 minutes. </u>
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- Proper eyelid cleanliness stops the bacterial buildup that leads to blepharitis and the potential for Demodex.
- Maintaining clean eyelids and lashes is also essential for safeguarding the many glands that line our eyelids and aid in the production of our tears.
- To allow the fluid to move across the eye, someone should flush their eye for 10 to 15 minutes while attempting to keep their eyes open.
- Some chemicals, such strong alkalis, may call for 60 minutes of flushing.
- When flushing the eye, one should make sure there are no chemicals or debris under the eyelid by looking around. They might want to get medical help after flushing.
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