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Hace 5 días · Cambrian Period, earliest time division of the Paleozoic Era and Phanerozoic Eon, lasting from 538.8 million to 485.4 million years ago. The Cambrian System, named by English geologist Adam Sedgwick for slaty rocks in southern Wales and southwestern England, contains the earliest record of abundant and varied life-forms.
Hace 4 días · Combined with the well-established geological theory of plate tectonics, common descent provides a way to combine facts about the current distribution of species with evidence from the fossil record to provide a logically consistent explanation of how the distribution of living organisms has changed over time.
Hace 5 días · Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, approximately 541 million years ago. The Precambrian represents more than 80 percent of the total geologic record.
Hace 4 días · Biodiversity (or biological diversity) is the variety and variability of life on Earth. It can be measured on various levels. There is for example genetic variability, species diversity, ecosystem diversity and phylogenetic diversity. [1] Diversity is not distributed evenly on Earth.
Hace 3 días · PlantaeDB: The Comprehensive Database for the Kingdom Plantae. Discover scientifically-proven uses, active compounds, taxonomy data, and more for most plants. About PlantaeDB.
Hace 3 días · Photosynthesis ( / ˌfoʊtəˈsɪnθəsɪs / FOH-tə-SINTH-ə-sis) [1] is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their activities.
Hace 5 días · Understanding Plant Labels at the New York Botanical Garden: Home. The New York Botanical Garden has maintained plant records since its founding in 1891. The Plant Records Department keeps records on the Garden’s living plant collections. Originally, specimens were recorded in hand-written accession books.
