You find an undescribed plant. It has small, free-living gametophytes and large, longer-lived sporophytes. You also observe that dispersal is carried out using spores. You thus conclude that your discovery is a .

A. gymnospermB. angiospermC. non-vascular plantD. seed plantE. seedless vascular plant

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Explanation:

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the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.

condenser is used to focus in the light microscope.