<span>The mammalian sperm cell consists of a head, a midpiece and a tail. The head contains the nucleus with densely coiled chromatin fibres, surrounded anteriorly by an acrosome, which contains enzymes used for penetrating the female egg.</span>
<span>The correct option from the given options is: "Scientist have determined the composition of Earth's core by using radiometric dating to examine meteorites".
</span><span>To date materials the procedure of radiometric dating or
radioactive dating is used, for example, rocks or carbon, in which trace
radioactive impurities were specifically fused when they were framed. The
strategy looks at the abundance of a normally happening radioactive isotope
inside the material to the abundance of its decay items, which shape at a known
consistent rate of decay.</span>
the true statements about esophagus are :
- The esophagus is a muscular tube.
and
- The esophagus moves food from the mouth to the stomach.
i hope it helped.........
Carbon is the best answer while other elements can be sodium, Lithium, or sulfur. It combines with hydrogen easily, and is the basis for all fossil fuels and organic materials.
