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Geologic Clock With Events And Periods
2012-11-18 19:08:04

The Paleoproterozoic is the first of three subdivisions of the Proterozoic Eon (occurring from 2.5 billion to 1.6 billion years ago (Ga). This period is marked by the first stabilization of the continents, and also when cyanobacteria--a type of bacteria that uses biochemical processes of photosynthesis to produce oxygen--evolved. Experts have found paleontological evidence that during at least part of the Paleoproterozoic era, about 1.8 Ga, the earth year was about 450 days long, with days...

2012-06-18 05:29:47

Symbol: COBU6 Group: Dicot Family: Tiliaceae Classification:       Kingdom   Plantae – Plants Subkingdom   Tracheobionta – Vascular plants Superdivision   Spermatophyta – Seed plants Division   Magnoliophyta – Flowering plants Class   Magnoliopsida – Dicotyledons Subclass   Dilleniidae Order   Malvales Family   Tiliaceae – Linden family Genus   Columbia Pers....

2012-06-18 05:29:47

Symbol: COLUM3 Group: Dicot Family: Tiliaceae Classification:       Kingdom   Plantae – Plants Subkingdom   Tracheobionta – Vascular plants Superdivision   Spermatophyta – Seed plants Division   Magnoliophyta – Flowering plants Class   Magnoliopsida – Dicotyledons Subclass   Dilleniidae Order   Malvales Family   Tiliaceae – Linden family Genus   Columbia Pers.

2012-06-18 08:50:05

Symbol: BRVU Group: Monocot Family: Poaceae Duration: Perennial Growth Habit: Graminoid Native Status: L48    N CAN    N Synonyms:   BRVU2 Bromopsis vulgaris (Hook.) Holub   BRVUE Bromus vulgaris (Hook.) Shear var. eximius Shear   BRVUR Bromus vulgaris (Hook.) Shear var. robustus Shear Distribution: County distributions for the following U.S. states are available at PLANTS:CA, ID, NV, OR, UT, WA, WY Classification:      ...

2012-06-18 09:50:10

Symbol: ASSU7 Group: Dicot Family: Fabaceae Duration: Perennial Growth Habit: Forb/herb Native Status: L48    N Distribution: County distributions for the following U.S. states are available at PLANTS:OR, WA Classification:       Kingdom   Plantae – Plants Subkingdom   Tracheobionta – Vascular plants Superdivision   Spermatophyta – Seed plants Division   Magnoliophyta – Flowering plants Class  ...

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Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.