Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.7.4 Practical: The Effect of Light on Gas Exchange in Plants Practical: The Effect of Light on Gas Exchange in Plants Apparatus Boiling tubes Cotton wool Alu...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.7.3 Plants: Gas Exchange in Photosynthesis & Respiration Gas Exchange: Photosynthesis & Respiration The processes of?respiration?and?photosynthesis?b...
Estimating the Size of a Population Measuring all the different levels of biodiversity within an ecosystem could be very?time consuming Finding out which species live in an ecosystem and the...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.7.2 Leaf Structure Leaf Structure The structure of the leaf is adapted to carry out both photosynthesis and gas exchange The different cell types (palisade m...
Carrying Capacity The?maximum stable population size?of a species that an?ecosystem?can?support?is known as the?carrying capacity Every individual within a species population has the?potenti...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.7.1 Diffusion in Gas Exchange Diffusion in Gas Exchange Diffusion is the?movement of molecules?from a region of its?higher?concentration to a region of its?l...
Abiotic & Biotic Conditions Niche The place where a species lives within an ecosystem is its?habitat The role that a species plays within its habitat is known as its?niche, including: Th...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 2.6.3 Practical: Investigating Respiration Practical: Investigating Respiration We can investigate the production of carbon dioxide and heat from respiration through ...
Practical Skill: Investigating the Effects of Random Sampling on Allele Frequencies Investigations to mimic the effects of?random sampling?on?allele frequencies?in a population can be devised using...
