Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
Genes.
A gene is a section of a DNA molecule that contains the information to code for one specific protein. The gene contains the code that determines the structure of a protein.
Crossword
1. hyphae
3. heterotroph
7. eukaryote
8. flagella
11. protists
9. nucleus
10. bacteria
12. prokaryotic
13. autotroph
This is the <span>Fayum </span>depression. Here, fossil evidence of a primate ancestor<span> was found predating the divergence between </span>hominoids<span> (apes and </span>humans<span>) and </span>cercopithecids<span> (Old World monkeys). The fossil of a single species </span><span>lived around 30 million years ago in modern-day Egypt and resembled the current New-World monkeys. </span>
