Different geographical barriers physically separated the tortoises on the galápagos islands. this separation resulted in the evolution of subspecies. this is an example of speciation.

Allopatric

Explanation:

Allopatric or geographic speciation is the speciation that occurs when a population of the same species becomes isolated by a sudden geographical change (for example, after an earthquake, the formation of mountains or rivers). Therefore both populations will evolve differently until they reach a point where they can no longer breed between them.

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1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602