Its large teeth and jaws may have been devoted to chewing through the bones left from other animals' kills. Dinosaur Reproduction: Like Birds on Nests Wang Zhenghua (left), curator of a local museum, and Wang Fangchen, a scientist from Beijing, remove a fossilized dinosaur egg from a ...
rivers and streams. Acid rain also dissolves helpful minerals and nutrients like calcium, magnesium and potassium before trees can absorb them. Acid rain rarely kills a forest outright but instead stunts its growth through years of soil degradation. Nutrient deprivation and exposure to toxins make tr...
Wood Frogs have a incredible hibernation strategy.They freeze solidand their heart completely stops during winter! Found across North America, from Alabama to the Arctic, they grow to about 2.5 inches (6.4 cm) long. In spring, they thaw and resume activity. Their ability to survive freezing co...