Answer:
There is no actual way that the mantle could be...'exposed' or 'seen'. But scientists have managed to find multiple ways to analyze the mantle and it's actual existence by using multiple devices. The mantle is basically a 2,900 kilometers (1,802 miles) thick blocks of rocks and minerals underneath the crust(or the surface of the earth) , and makes up a whopping 84% of Earth's total volume.
C. Genetic variation
Bacteria are very numerous, and random mutation of bacterial DNA generates a wide variety of change, including resistance. It happens through mutation and selection. Not only are they capable of sharing genetic bits of DNA to related and unrealted species they can develop ways to remove the antibiotic before it reaches its intended area via biochemical pumps or enzymes to inactiavte the antibiotic.
The first statement matces with the last option - autosome
The second one goes with chromosome theory
Then, third is diploid
The next - haploid
Sixth - <span>linkage
Then </span>x chromosome and y <span>chromosome
Hope you still need the answer because this one is really helpful.
cheers!</span>
In 1869 Mendeleev put together the periodic table
