Tip: For joints 1/8 inch to Â½ inch, use sanded grout. For joints up to 1/8 inch, use non-sanded grout. â¢ Before grouting, remove all of your tile spacers. Again, leaving the spacers in place and grouting over them will compromise the integrity of the grout.
The assessment, conducted by the Primate Specialist Group of the International Union for the Conservation of Nature (IUCN), concludes that 23 lemurs qualify as Critically Endangered - the highest class of threat. Fifty-two are in the Endangered classification, and a further 19 Vulnerable to extinction.
Three-toed sloths are listed as critically endangered on the IUCN's Red List -- they are threatened by hunting and habitat destruction. ACTION GUIDE: Endangered Species. Biodiversity loss and the extinction of rare species are one of the most important environmental problems today.