1 There are large areas of tundra in northern North America, northern Europe, and northern Asia. 2  The word tundra comes from a Finnish word tunturi, which means treeless plain or barren land. 3  The tundra is a very fragile biome that is shrinking as the permafrost melts. There are large areas of tundra in northern North America, northern Europe, and northern Asia. 2  The word tundra comes from a Finnish word tunturi, which means treeless plain or barren land. 3  The tundra is a very fragile biome that is shrinking as the permafrost melts.
1 Other possible symptoms of early pregnancy include mood changes, increased urination, headaches, low backache, breast tenderness, darkened areolas, fatigue, nausea, and implantation bleeding. 2  Symptoms of late pregnancy can include leg swelling, backache, heartburn, leakage of urine, and shortness of breath.
New Danish research indicates a way to prevent the condition: plenty of sex. (Photo: Colourbox). Between 3 and 5 percent of pregnant women develop pre-eclampsia, a medical condition that is the main cause of complications for both mother and baby during and after pregnancy. Symptoms include increased blood pressure and protein in the urine in the second half of the pregnancy. In the most serious cases the pregnant woman can develop violent seizures that in rare instances can be fatal.