The following statements accurately reflect the beliefs on Earth's early history:
B. Scientists believe the early atmosphere lacked the oxygen necessary to support modern human life.
The following statements are incorrect:
A. Scientists believe that DNA may have existed before RNA - Scientists actually believe the opposite - RNA may have existed before DNA.
C. Scientists believe that microspheres nearly prevented the development of early life.
D. Scientists believe that oxygen was plentiful in the early atmosphere - again, scientists believed the opposite
The right answr is hydrogen bonds
The hydrogen bond or hydrogen bridge is an intermolecular force involving a hydrogen atom and an electronegative atom such as oxygen, nitrogen and fluorine. The intensity of a hydrogen bond is intermediate between that of a covalent bond and that of van der Waals forces.
The helices of the DNA (both strands) are maintained by hydrogen bonds.
Answer:
A layer of pale,Sandy soil lacking clay and iron is likely to be found in horizon E
Answer:
Beets, Garlic, meat, dark chocolate, leafy greeens, citrus fruit, pomegranae, etc.
Explanation:
