... animals deep inside a submerged chamber in the Sac Actun cave system in eastern Yucatan Peninsula, Mexico, in 2007. The remains belong to a girl named Naia (Figure 5) and the location where she was found is called "Hojo Negro" (Black Hole). Dr Thomas Stafford Jr. from Aarhus University determined the age of the girl and the animals found with her to be some around ... 9,700 12,900 years-old and Prof Douglas Kenneth of Pennsylvania University, a co-author of the paper published in the Journal Science described some unique ... migrations of humanity, but you also can attempt to date them....

• Word Count: 2012
• Approx Pages: 8
• Has Bibliography
• Grade Level: Undergraduate

... , and fewer plants and animals can generate homeostatic mechanisms (for internal stability) to cope. There is still relatively high diversity on a world scale, but most of the taxonomic groups in the dry forest are less diverse than in the rain forest. Dry forest is important as habitat for migratory birds in their nonbreeding season (Central America, India). PLANT ADAPTATIONS. Trees have ... growth is also controlled by the nearness of the water table, with trees always along water bodies, grading into gallery forest, which in turn may be vegetatively comparable to dry forests or rain ...

• Word Count: 12375
• Approx Pages: 50
• Has Bibliography
• Grade Level: Undergraduate