Layers of the earth: Is where convection currents take place.
- crust- top layer that is the earth which protects the entire composition of the earth.
- mantle- The part where lava and volcanoes happen , Very hot
- inner core- The core of the earth, located in outer core.
- outer core- The outer core of the earth.
<span>Before the completion of the Human Genome Project, it took few years before the well-known forecasts stated that humans had at least 100,000 genes. But latest Human Genome Project evaluates lowered number to a more timid range of 20,000 to 25,000. It has helped to narrow the range of feasible genes and to separate certain candidates as supplying to particular diseases. Scientists have also re-evaluated past conclusions, such as the idea that genes are self-restrained, detached pieces of DNA with defined character. They now know that some genes that tasks simultaneously can make more than one protein; where in fact the average gene might make three proteins. Also, genes will be visible to grab genetic code from other DNA parts</span>
Answer:
D. The oldest rock is found in the bottom layer of a rock formation.
Explanation:
