Chemical oxygen generators are used to furnish oxygen to the

Catabolism. breaking down of complex substances into simples ones to obtain energy.

Relative dating.is a way of using geometric relationship between rocks bodies to determine the sequence of geological events in an area.

Marine trangression. is a geologic events during which sea level rises relative to the land and the shoreline moves toward higher ground, resulting in floading.

Facies fossils. a fossil which exist only in a very specific environment. They show the original conditions of the position.

Anabolism. is the termi given to all the chemical reactions where simple substances are joines together to form more complex ones.

Mass extinction. is the extinction of one or more species in a short period of geological time, this is a consequences of a natural disaster or studies of fossil recors...

Marine regression. is a geological process ocurring when areas of surmerged seafloor are exposed above the sea level

Index fossils. fossil with a large geographical distribution but which existed only for a short period of time which are used to define and identify geological process

Hadean: formation of the earth. Middle of Permian-Triassic: large mass extinction Pleistocene: last glaciation Carboniferous: evolution of reptiles(amniotic eggs) Proteroic: oxygenation of the atmosphere. Tertiary:mammals become dominants Cretaceous:reign of dinosaurs and their extinction Ordovician:first land plants animals Devonian:jawed fish Middle proteroic Cambrian: first metazoans Eocene: formation of the himalayas M. Devonian-Carboniferous:large forests of tree ferns. Permian:formation of pangea Quaternary:hominids Paleogene: grasslands replace forests

Eukaryotic cell carries out heterotrophic nutrition?

1. Some glucose molecules are used in cellular respiration( a catabolic process) and others are used in other process 2.Cellular repiration takes place inside the motochondria, where glucose and oxygen molecules are converted into carbon dioxide and water. This process releases a lot of energy. 3. Part of this energy is used in carrying out cellular functions,the transport of molecules throungh the membrane..Part of this energy is lost as heat, and the rest is used in anabolic reaction.4. The energy in anabolic reactions can be used to join several molecules of glucose to form more complex carbohydrates.

Eukaryotic cell carries out autotrophic nutrition?

1. Autotrophic cells take place in carobn dioxide and water. 2. Inside the chloroplasta, these molecules are joined to form glucose using energy from sunlight. The light energy is captures by the pigment chrolophyll. During this process oxigen is realased. 3. Some glucose molecules are used in catabolic reactions to obstain energy;cellular respiration. 4. As in heretotrophic cells, the energy in anabolic reactions can be used to join several molecules of glucose to form more complex carbohydrates.