Question

Which adjective does not necessarily describe a known feature of the early universe?

1) Expanding
2) Hot
3) Dense
4) Observable

Answer 1

The adjective that does not necessarily describe a known feature of the early universe is Observable. The expansion, hotness, and density of the early universe are well-supported by scientific observations and theories.

Step-by-step explanation:

The adjective that does not necessarily describe a known feature of the early universe is Observable. While there is observational evidence for the expansion, hotness, and density of the early universe, the observability of certain features may be limited due to factors such as the cosmic microwave background radiation. However, the expansion, hotness, and density of the early universe are well-supported by scientific observations and theories.