Answer:
A. The smooth, clear rock layers
Explanation:
<u>Answer:</u>
Australia has invested in capital goods, so their standard of living and GDP increasing is true.
<u>Explanation:</u>
- Capital goods are goods or objects that is used to produce other good or objects. Examples are buildings, furniture etc.,
- GDP measures the economic activity of the country.
- Investing in these goods has led to the "average household net-adjusted disposable income per capita as USD 32,759 a year", this increased the standard of living and resulted Australia as 'one of the highest' in the world.
The fly species Drosophila santomea is found only on a single small island. Thus, this fly is considered to be "Endemic".
<span>The Left-sided Problem of the heart involves the lack of enough supply of oxygen induced blood and the blood which is unable to reach the heart goes to lungs causing breath issues. Another issue with this problem is that left side of the heart pumps blood into the body, so when it fails, less blood will be pumped into the arteries.</span>
The decay of uranium isotopes is used to provide information about the age of Earth.
<h3>
Explanation:</h3>
Isotopes of Uranium U-232, U-233 , U-234 , U-235 , U-236 , U-238 are used as fuel in nuclear reactors or as explosives for nuclear weapons. Uranium 238 is not very radioactive and it constitutes for nearly 99.3% of natural uranium on Earth and has the longest lifetime: its period is 4.5 billion years, about the age of Earth.
Use of radiometric dating techniques help in defining the age of substances (natural or man-made) using the known decay rates of radioactive elements. Each element has an individual decay rate and half life time.
Two Uranium isotopes (U-238 and U-235) are used for radiometric dating. Both the isotopes have different decay rates and half life period. Both are unstable and radioactive. Since two different isotopes produce two different decay clocks (one as a reference to other), it is beneficial in accurately determining the age of samples. The age of earth (rocks or other natural elements) can be easily determined using Uranium isotopes.
