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(fù)習(xí)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(fù)習(xí)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...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 復(fù)習(xí)筆記：1.1.3 Solutions Solutions Terminology You need to know all the following terms used when describing solutions: Terminology Abo...
Edexcel IGCSE Chemistry: Double Science 復(fù)習(xí)筆記：1.1.2 Diffusion & Dilution iffusion & Dilution Diffusion and dilution experiments support a theory that all matter (solids, liquids ...
