The sun is composed mainly of ________.
A) helium and oxygen
B) oxygen and nitrogen
C) hydrogen and helium
D) hydrogen and oxygen
Correct Answer:
Verified
Q11: Common characteristics of living organisms include _.
A)
Q12: Constant bombardment of early Earth's nutrient-rich seas
Q13: Earth's first living cells were probably _.
A)
Q14: The kingdom characterized by a lack of
Q15: The kelp found in abundance along much
Q17: About _ of the sun's incoming energy
Q18: _ of the sun's incoming energy forms
Q19: Photosynthesis requires _.
A) solar energy
B) carbon dioxide
C)
Q20: Chemoautotrophs and phototrophs are both _.
A) decomposers
B)
Q21: Phototrophs obtain their energy from _.
A) producers
B)
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents