NATURAL SELECTION. NATURAL SELECTION IN INSECTS INTRODUCTION LABORATORY SIMULATION Lab Data х G G2 G Released G4 G 250 125 88 83 76 29 Typica Carbonaria 750 510 735 885 1042 1406 Total 1000 635 823 968 1118 1435 Phenotype Frequency Color Initial Frequency Frequency GS Typica White 0.25 Carbonaria Black 0.75 Allele Frequency Allele Initial Allele Frequency Gs Allele Frequency 9 d 0.50 р D 0.50 Genotype Frequency Moths Genotype Color Moths Released Initial Frequency Frequency G5 Number of Moths Gs dd White 250 Typica Carbonaria 0.25 q? 2pg p? Dd Black 500 0.50 Carbonaria DD Black 250 0.25 SHO

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

this is a good question! i'll do some research and come back when i have the answer!