What Is the Average Diameter of the Head of a Comet

question 39

Multiple Choice

What is the average diameter of the head of a comet?

• A)1-2 km
• B)less than 15 km
• C)50 km
• D)500 km
• E)2,500 km

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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.