Ambio 22: 417-426. soil organic matter and acid soils predominate. case in many of the soils inthe warm-humid tropics. of agricultural and charcoal production. cut and burned to allow planting of crops. cycles before the land has to revert back to fallow. and added to soil.
It's important for adults 40 and older to have eye exams every 2 to 4 years to check for problems. Those who have a history of eye problems or who are at risk for developing them should see an eye doctor every year. This is particularly important if you have risk factors or a family history of eye problems.
March 2015 â One in four U.S. women has not had an eye exam in the last two years, says a 2014 Harris Poll survey funded by Prevent Blindness. This is despite the fact that more women than men have age-related macular degeneration, cataracts and glaucoma.