"I Live 20 Minutes from Center City

question 15

Essay

"I live 20 minutes from Center City." How is this statement similar to giving astronomical distances in light-years

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Definitions:

Sori

Clusters of sporangia, often found under fern leaves, where the spores are produced.

Ferns

A group of non-flowering vascular plants that reproduce via spores and have leaves typically referred to as fronds.

Fronds

The leaf-like parts of ferns and some other plants, often large and divided into sections.

Homospory

Production of one type of spore that gives rise to a bisexual gametophyte. Compare with heterospory.