Search results
Results from the WOW.Com Content Network
Phoenix dactylifera, commonly known as the date palm, [2] is a flowering-plant species in the palm family Arecaceae, cultivated for its edible sweet fruit called dates. The species is widely cultivated across northern Africa , the Middle East , the Horn of Africa , Australia , South Asia , and California . [ 3 ]
Dates in this article are consensus estimates based on scientific evidence, mainly fossils. In biology, evolution is any change across successive generations in the heritable characteristics of biological populations.
Date Event 4.3-4.1 Ga: The earliest life appears, possibly as protocells. Their genetic material was probably composed of RNA, capable of both self replication and enzymatic activity; their membranes were composed of lipids. The genes were separate strands, translated into proteins and often exchanged between the protocells.
The human body is the entire structure of a human being. It is composed of many different types of cells that together create tissues and subsequently organs and then organ systems. The external human body consists of a head, hair, neck, torso (which includes the thorax and abdomen), genitals, arms, hands, legs, and feet.
The history of anatomy spans from the earliest examinations of sacrificial victims to the advanced studies of the human body conducted by modern scientists. Written descriptions of human organs and parts can be traced back thousands of years to ancient Egyptian papyri , where attention to the body was necessitated by their highly elaborate ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Craters are very useful in relative dating; as a general rule, the younger a planetary surface is, the fewer craters it has. If long-term cratering rates are known to enough precision, crude absolute dates can be applied based on craters alone; however, cratering rates outside the Earth-Moon system are poorly known. [8]
AOL Promotions. You’ll no longer see paid ads, but you’ll continue to see promotions for AOL products and brands. We want to keep you in-the-know of our latest product news and information.