IB DP Biology: HL復習筆記1.2.1 Origin of Cells
Spontaneous Generation Pre-existing cells In 1852 Robert Remak made the conclusion that cells divided to form new cells, that is cells came from?pre-existing cells His conclusion was reached after ...
Edexcel IGCSE Geography 復習筆記 1.3.3 Flooding - Causes & Control
Edexcel IGCSE Geography 復習筆記 1.3.3 Flooding - Causes & Control Causes of Flooding Flooding occurs when the?capacity?of the river channel is exceeded The water flows over the banks and onto ...
Edexcel IGCSE Geography 復習筆記 1.3.2 Water Quality & Supply
Edexcel IGCSE Geography 復習筆記 1.3.2 Water Quality & Supply Variations in Water Quality Clean,?potable?water is essential for human consumption, irrigation and for livestock Approximately one...
IB DP Biology: HL復習筆記1.1.6 Skills: Cell Theory
Practical 1: Using a Microscope Many biological structures are too small to be seen by the naked eye Optical (light) microscopes are an invaluable tool for scientists as they allow for tissues, cel...
Edexcel IGCSE Geography 復習筆記 1.3.1 Water Uses, Demand & Supply
Edexcel IGCSE Geography 復習筆記 1.3.1 Water Uses, Demand & Supply Water Uses Only?2.5%?of the water on Earth is?freshwater 68.7%?of freshwater is stored in glaciers and ice sheets and?30%?is g...
Edexcel IGCSE Geography 復習筆記 1.2.3 River Landscapes
Edexcel IGCSE Geography 復習筆記 1.2.3 River Landscapes Upland Landforms River landscape characteristics The changes in river channel characteristics, lead to changes in the river landscape The upl...
Edexcel IGCSE Geography 復習筆記 1.2.2 Changes in River Characteristics
Edexcel IGCSE Geography 復習筆記 1.2.2 Changes in River Characteristics Changes in River Characteristics River characteristics All rivers have a?long?and?cross profiles Each river's long and cross ...
Edexcel IGCSE Geography 復習筆記 1.2.1 Fluvial Processes
Edexcel IGCSE Geography 復習筆記 1.2.1 Fluvial Processes Weathering & Mass Movement River valley processes Both?fluvial?and landscape processes shape the river and surrounding land in the drain...
IB DP Biology: HL復習筆記1.1.5 Stem Cells
Stem Cells A?stem cell?is a cell that can?divide?(by mitosis) an?unlimited number of times Each new cell (produced when a stem cell divides) has the potential to?remain a stem cell?or to develop in...
Edexcel IGCSE Geography 復習筆記 1.1.3 River Regime & Hydrographs
Edexcel IGCSE Geography 復習筆記 1.1.3 River Regime & Hydrographs River Regimes & Storm Hydrographs River regimes The?discharge?of a river changes over time The?river regime?is a record of ...
Edexcel IGCSE Geography 復習筆記 1.1.2 The Drainage Basin
Edexcel IGCSE Geography 復習筆記 1.1.2 The Drainage Basin The Drainage Basin A?drainage basin?is an?open system Every drainage basin is unique and is different in shape and size, with different roc...
Edexcel IGCSE Geography 復習筆記 1.1.1 The Hydrological Cycle
Edexcel IGCSE Geography 復習筆記 1.1.1 The Hydrological Cycle Characteristics of the Water Cycle The hydrological cycle is a?closed?system Water is constantly recycled through the system Within the...
