Westat paychecks are issued on Fridays for the prior week (Monday-Sunday). To be paid on time, data collectors must submit correctly completed timesheets by Sunday midnight EST for work done during the previous week. Taking advantage of direct deposit will allow for the quickest payment.
Poison dart frogs, also called poison arrow frogs, are so named because some Amerindian tribes have used their secretions to poison their darts. Not all arrow frogs are deadly, and only three species are very dangerous to humans. The most deadly species to humans is the golden poison arrow frog (Phyllobates terribilis).here are more than 100 species of poison dart frogs, varying in color and pattern. The black and green species has black spots, the strawberry or blue jeans frog is all red with blue legs, the yellow-banded species appears painted with yellow and black.
View full size image. The colorful markings of poison dart frogs vary depending on where the frogs live. Now, a new study using thousands of fake-frog decoys finds that these markings evolved hyper-locally, explaining why individuals in a single species of frog can sport so many different colors and patterns.n the animal kingdom, bright colors are often a sign for predators to steer clear. Toxic moths and butterflies don yellow-green wings; cyanide-oozing millipedes glow with a sickly bioluminescence. The poison dart frog Ranitomeya imitator sports bright colors on its back.