What Element Dominates the Ice on the Surface of Pluto

question 33

Multiple Choice

What element dominates the ice on the surface of Pluto?

• A) methane
• B) nitrogen
• C) hydrogen
• D) carbon monoxide
• E) carbon dioxide

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Definitions:

Gonads

The primary reproductive organs in animals, which in males are the testes and in females are the ovaries, responsible for producing gametes and hormones.

Sexual Development

The process of physical and emotional changes that occur as a person matures sexually, including puberty and sexual identity formation.

Sex Glands

Organs that produce sex hormones and gametes; for males, this refers to the testes, and for females, the ovaries.

X-Chromosome

One of the two sex chromosomes, present in two copies in females (XX) and one copy in males (XY), and carrying genes that determine sex and other traits.