Speciation The?theory of evolution?states that?species?do not stay the same, but change over time; this can lead to the process of?speciation Speciation can be defined as?the development of new spe...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復習筆記：1.2 3 Separation Techniques 、 Simple Distillation This is used to separate a liquid and?soluble solid?from a solution (e.g., water from a s...
Evolution by Natural Selection Species?do not stay the same over time; the species that we see around us today have developed over millions of years This process of species change is known as?evolu...
Reducing Climate Change The use of?extrapolation to model climate change?shows that the consequences of global warming could be?extremely serious?for humans and global biodiversity?if we continue?w...
Carbon Cycle & Reduction of Atmospheric Carbon Dioxide The atmospheric carbon dioxide that contributes to the greenhouse effect is part of the global carbon cycle The term?carbon cycle?refers t...
Climate Change & the Scientific Community It can be said that there is a?consensus, i.e. everyone agrees,?among the scientific community?that Increasing concentrations of greenhouse gases?cause...
Practical: Temperature & Development of Organisms Evidence from the natural world indicates that?global warming affects the development of living organisms It is possible to investigate the eff...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復習筆記：1.2 2 Pure Substance vs Mixture Pure Substance vs Mixture In everyday language we use the word pure to describe when something is?natural?or...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復習筆記：1.2.1 Element, Compound or Mixture Classify an Element, Compound or Mixture You need to know the following definitions Classify an El...
