Question

science
what former planet was reclassified as a dwarf planet in 2006?
venus
neptune
uranus
pluto

Explanation:

In 2006, the International Astronomical Union (IAU) redefined the criteria for a planet. Pluto, which was previously considered the ninth planet in our solar system, did not meet the new criteria. The key points were that a planet must orbit the Sun, be spherical in shape (due to its own gravity), and have cleared its orbit of other debris. Pluto failed the third criterion as it shares its orbital region with other Kuiper - belt objects.

Answer:

Pluto