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Parallel veins in a leaf would indicate that the plant is:

Xylem and phloem are:

The first organisms to appear on Earth probably were

Why is it impossible for a single individual organism to indicate an evolutionary change?

Which of the following is NOT considered a REPRODUCTIVE isolating mechanism?

Most photosynthesis takes place in the:

Darwin determined the absolute age of the fossils he found.   

Choose two scientists discussed in this unit and explain their contribution to evolutionary theory and the impact it had on society.

Abiogenesis is the idea that living organisms arise from nonliving matter.

Darwin’s and Lamarck’s theories of evolution both suggest that