Answer:
Not good for such old age
Explanation:
Carbon 14's half-life is about 5,700 years. So, it cannot be used to date something more recent than that. Also, due to the decay, it cannot be used on items older than about 50,000 years.
Then youngest a sample from the precambrian era could be is about 541,000,000 years (541 millions), so it's WAY past the range of use of Carbon 14, since there wouldn't be any carbon 14 left in the sample to evaluate the age through C14's half-life cycle.
One of the reason is : An increased body size and robustness. They have long spatial/temporal range
, they were the first hominin to leave Africa, they have modern human body proportions
, they were the first to have a protruding human nose
and they actively were hunting.
Answer:
If red blood cells are placed in a 0.3 M NaCl solution, there is little net osmotic movement of water, the size and shape of the cells stay the same; the NaCl solution is isotonic to the cell.
Explanation:
Answer:
DNA helicase
Explanation:
The image of this question shows the replication of DNA into two identical copies. However, before this occurs, the double-stranded DNA needs to be unwound or separated so that each single strand can serve as a template for a new strand.
An enzyme called DNA helicase is responsible for the separation of the DNA molecule into single strands. After which, DNA polymerase begins to add nucleotides to each single strand of DNA.
