In the early 1900s german geophysicist alfred wegener began to question how the structures on the earth formed over time. he proposed the theory of continental drift to suggest that all continents were once connected and have "drifted" to their current location over time.

what was the main reason that wegener's theory received a lot of ridicule from the scientific community?
a) no similar fossils were found on different continents.
b) there was no data to suggest any change in geologic structures.
c) wegener did not give a method on how the continents actually moved.
d) the outlines of the continents looked like puzzle pieces that would fit together.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

light dependent reactions:

light independent reactions:

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voluntary muscles are controlled by the cerebellum.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.