The position vector 
describes the path of an object moving in space. Find the speed 
of the object.
Definitions:
Derived Feature
A trait that appears in recent parts of a lineage and is not present in the ancestor, contrasting with ancestral traits shared by multiple lineages.
Protect The Embryo
Mechanisms or structures that ensure the safety and development of an embryo within an organism.
Gametophytes
The haploid, gamete-producing phase in the life cycle of plants and algae.
Gymnosperms
Gymnosperms are a group of seed-producing plants that includes conifers, cycads, ginkgo, and gnetophytes, characterized by seeds that are not enclosed by a fruit.
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