Question

energy but not matter is exchanged with its surroundings. *
closed system
open system
two - way system
earths shape most closely resembles a(n) *
oblate spheroid
sphere
oval
ellipse
possible explanation or solution to a problem *
law
hypothesis
experiment
theory

Explanation:

1. In a closed - system, energy but not matter is exchanged with its surroundings.
2. Earth's shape most closely resembles an oblate spheroid due to its rotation causing a bulge at the equator.
3. A hypothesis is a possible explanation or solution to a problem, which is then tested through experiments to become a theory if supported by evidence.

Answer:

1. closed system
2. oblate spheroid
3. hypothesis