The Biosphere section A
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what is the biosphere
The biosphere revers to the area and around the earth where life is found
what can the biosphere be divided into to
• Atmosphere • Lithosphere • hydrosphere
what is found in the biosphere
various ecosystems
name the 5 layers of the atmosphere from top to bottom
Exsosphere thermosphere / ionosphere mesosphere stratosphere troposphere
explain the troposphere
the troposphere is the layer closest to the earth and it is the only layer where living organisms can survive or are found. It consists mainly of nitrogen and oxygen. other gases like hydrogen and carbon dioxide are also found in the troposphere
name the layers of EARTH
• crust • mantle • outer core • inner core
what is the lithosphere
the upper part of the earths crust, whereon and wherein living organisms are found.
what does the lithosphere consists of
rock soil
what animals does live in the lithosphere
insects small animals plants microorganisms ants earthworms
name the plants in the lithosphere
potato plants microorganisms like protozoa
what does protozoa do
the decomposition of dead plant and animal matter
what lives on top of the lithosphere
mammals reptiles bird amphibian invertebrates
what is the hydrosphere
the hydrosphere is composed of all the different bodies of water on earth.
give 6 examples of hydrospheres
Oceans Lakes Dams Rivers Underground rivers reservoirs
name 2 examples of plants /animals that use water as a habitat
water lily fish eagle
what does these plants/animals depend on and for what
they depend on organisms for food and nutrients
why do other animals need water
reproduce
what does micro organisms like
plankton and amoeba are found in large quantities in the hydrosphere and serve as a source of food for smaller organisms
name the 7 life processes
• Nutrition • Reproduction • Respiration • Excretion • Growth • Sensitivity • Movement