Do you have the solutions you want me to compare and contrast? :)
Answer:
1.2 stands for 2 atoms of hydrogen and 1 atom of oxygen
2.carbon and oxygen
3.
4.
5.
6.
Answer:
According to the current fossil record, scientists believe that the life on earth began about 3.5 billion years ago.
- A.<u> higher, lower</u><u> </u>
- B. <u>2</u><u> </u><u>to</u><u> </u><u>1</u>
2.
No movement of water would have
occurred if they were isotonic.
3.
- A. <u>Side</u><u> </u><u>2</u>
- B. <u>Side</u><u> </u><u>1</u>
Answer:
sequences of nitrogenous bases in the cell's DNA
