B2
1(C) is things such as conservation programs and genetic variation stuff.
2. No, because they need to have the same genus.
3. Need to be pyramid shaped, they are different because pyramid of numbers is based on number and biomass is based on number and mass. Also biomass is lost at each stage in a food chain.
4. Lichens.
5.Biology 6 marker is just an idea that carbon from the atmosphere gets locked up in limestone as animals after many years fall to the seabed and compress on each other at high pressures so carbon is unable to leave. Acid rain weathers and stuff.
6. Artificial Relationship is based on appearance rather than genes.
7. You can tell that the species are different because if you interbreed them, they can't produce a fertile offspring. They lived of the same adaptations as seen in the picture you can relate the characteristics. You can also talk about geographical isolation.
C2
1. It took a long time before it was widely accepted this is because Wegner was a geologist and it needed to be tested by many scientists for further evidence.
2. Oceanic plate is denser than continental plate so gets subducted underneath continental and allows subduction to occur due to high temperatures and high pressures. It also forms mountains and volcanoes.
3.the yield decreases.
4. Comprise is made and you have to relate each thing to the graph.
5.For 6 marker you need to write stuff like from the symbols given Cl- is attracted to the annode and H+ atoms is attracted to the cathode and Na+, OH- is left over forming sodium hydroxide. Also you can talk about how reduction happens at cathode, gain in electrons vice versa, as oxidation happens at annode so loss in electrons, also thats why it loses mass and cathode gains mass.
P2
1. Alpha is the paper, and the last two cross over in the labels.
2. For biology 6 marker the coal per second is 3x10^10 and you can talk about how electricity is generated such as fuel is burnt, making steam, which turns the turbine and then drives the generator , electricity output and use of step up and step down transformers.
3. 0.075
(b) its 691.2 something like that not sure can't remember but in form of (6xx.2)
4. Model C you can talk about eleptical orbits and it is in the middle of the solar systems due toa pulling of forces called centripetal force and ptomely's idea was tried but proved to be wrong where earth was at the centre. Also sun has later not been proved scientifically wrong and is a plausible conclusion.
5. Aestoroid planets are able to be made because of strong gravity pulling the debris apart. Can't remember exactly what I put but something along the lines of this.
Section D
its kind of straight forward.