21. resistance to the poison warfarin is a genetically determined trait in rats. homozygotes carrying the resistance allele (ww ) have a lower fitness because they suffer from vitamin k deficiency, but heterozygotes (ww) do not. however, the heterozygotes are still resistant to warfarin. in an area where warfarin is applied, the heterozygote has a survival advantage. due to warfarin resistance, the heterozygote is also more fit than the normal homozygote (ww). if the relative fitness values for ww, ww, and ww individuals are 1.0, 0.37, and 0.19, respectively, in areas where warfarin is applied, calculate the allele frequencies at equilibrium. how would this equilibrium be affected if the rats were no longer exposed to warfarin

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.