Aquatic mammal fossils can be found in strata dating back at least 145 million years, beginning in the early Cretaceous…
Arthropod fossils can be found in strata dating back at least 539 million years, beginning at the start of the…
Angiosperm fossils can be found in strata dating back 174 million years, beginning in the late Jurassic period of the…
Amphibian fossils can be found in strata dating back 350 million years, beginning in the early Carboniferous period of the…
Ammonite fossils can be found in strata dating to between 409 million years ago (the Devonian period of the Paleozoic…
Algal fossils can be found in strata dating back 1.6 billion years, beginning with the Calymmian period of the Mesoproterozoic…
Silver (Ag) is a chemical element with atomic number 47. It is soft and lustrous, solid under standard observational conditions,…
Rhodium (Rh) is a chemical element with atomic number 45. It is a hard, silvery platinum-group metal with high resistance…
Rhenium (Re) is a chemical element with atomic number 75. It is a grayish, heavy, rare metal and remains solid…
Platinum (Pt) is a chemical element with atomic number 78. It is a dense silvery metal which gives its name…
Palladium (Pd) is a chemical element with atomic number 46. It is the least dense of the platinum-group metals, and…
Osmium (Os) is a chemical element with atomic number 76. It is the densest stable element, making it very hard…
Iridium (Ir) is a chemical element with atomic number 77. It is a hard yet brittle platinum-group metal with a…
Gold (Au) is a chemical element with atomic number 79. It is a soft, yellowish metal that remains solid under…
The mumps, measles, and rubella (MMR) vaccine is a type of attenuated combination vaccine which gives protection against the three…
The tetanus toxoids, diphtheria, and acellular pertussis (TDaP, or alternatively DTaP) vaccine is a type of DPT combination vaccine. As…
The Hammond Creation Lab Safety Manual is a proprietary instructional book published and internally distributed by International Genetic Technologies specifically…
A fire axe, also called a pick head axe, is a type of axe which has a sharp poll (the…
Happy Punch is a fictional brand of cigarettes which was sold during the early 1990s.
Lysine is an α-amino acid which is used by animal cells in the protein synthesis process. In humans and many…