Before Watson and Crick presented their work, the scientific community understood that proteins and genes are interrelated and that genes may be located on chromosomes but were not able to point out genes as having locations. The role of DNA was also thought to be extremely insignificant, and it was viewed simply as a binding molecule within the cell.
Answer: the correct answer may have taken place independently by a variety os species descended from aquatic ancestors.
Explanation:
Scientists think that life started in the oceans as early as 4 to 4.2 billion years ago.
Dispose of the needle in heavily wrapped bags into the trash. Make sure if someone was to grab the bag they would not get stabbed or poked.
Answer:
Eath's crust
Explanation:
Silicon dioxide (SiO2) and aluminum oxide (Al2O3) are the two most abundant compounds in the Earth's crust. This explains why oxygen, silicon, and aluminum are the three most abundant elements in the crust.
The most abundant compound in the universe is water.
