b. Earth
c. Geothermal
d. Sun
answer: a. Energy
4. The biggest source energy on the earth is...
a. Sun
b. Month
c. Star
d. Planet
answer: a. Sun
b. Earth
c. Geothermal
d. Sun
answer: a. Energy
4. The biggest source energy on the earth is...
a. Sun
b. Month
c. Star
d. Planet
answer: a. Sun
Editor: Dian Effendi