IB DP Biology: HL复习笔记4.2.6 Climate Change: Impact
Greenhouse Gases & Climate Patterns Greenhouse gases?absorb infrared radiation emitted by the earth, causing the atmosphere to warm Without greenhouse gases, the earth would be much colder The?...
IB DP Biology: HL复习笔记4.2.5 Climate Change: Greenhouse Effect
The Main Greenhouse Gases When?radiation from the sun?hits the earth, it is?radiated back?from the earth's surface as?long-wave radiation A?greenhouse gas?is a gas that?absorbs?this re-radiated rad...
IB DP Biology: HL复习笔记4.2.4 Carbon Cycle: Organic Matter
Formation of Peat Under normal conditions the tissues of dead organisms are completely broken down by decomposers known as?saprotrophs?and?detritivores These decomposers require specific conditions...
IB DP Biology: HL复习笔记4.2.3 Carbon Cycle: Methane
Methanogenesis Methane?(CH4) is a simple?hydrocarbon It is present as a?gas?in the atmosphere, and underground, and is the main component of?natural gas?fossil fuel Methane can be produced by the?n...
IB DP Biology: HL复习笔记4.2.2 Carbon Cycle: Carbon Dioxide in the Atmosphere
Respiration & Carbon Dioxide All living cells carry out some form of cellular?respiration, from bacteria, to plants, to animals Many organisms carry out?aerobic respiration Aerobic respiration ...
IB DP Biology: HL复习笔记4.2.1 Carbon Cycle: Carbon Dioxide
Carbon Fixation Carbon?is present in the?atmosphere?in the form of?carbon dioxide gas Carbon is taken out of the atmosphere by plants to be used in?photosynthesis Plants are?autotrophs Autotrophs u...
IB DP Biology: HL复习笔记4.1.9 Skills: Pyramids of Energy
Pyramids of Energy Pyramids of energy illustrate the?amount of energy contained?within the?biomass?of organisms at each trophic level The?length?of each box, or bar, represents the quantity of ener...
IB DP Biology: HL复习笔记4.1.8 Skills: Chi-squared test & Statistical Significance
Chi-squared Test for Association Looking for associations between species The distribution of species in a habitat is?rarely random; it usually depends on factors such as soil type, water availabil...
IB DP Biology: HL复习笔记4.1.7 Skills: Species, Communities, Ecosystems & Energy Flow
Identification of Trophic Level Classifying species as autotrophs, consumers, detritivores, or saprotrophs A species can be classified as an autotroph, consumer, detritivore, or saprotroph on the b...
