Answer:
Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.
Answer:
D). Combat the overuse of asphalt and concrete surfaces.
Explanation:
Urban Heat is characterized as the circumstance in which a particular urban area has a considerably increased temperature because of specific human activities. As per the question, the most adequate strategy to assist a city in fighting the battle against the increasing 'urban heat island' would be to '<u>avoid the excessive use of surfaces made of concrete and asphalt</u>.' The key reason behind this is that 'asphalt and concrete surfaces tend to possess an extremely higher heating capacity' and thus, it absorbs heat from the sun and causing the land temperatures to reach higher till 60° celsius. Therefore, preventing the overuses of such surfaces would be the most adequate strategy to keep the temperatures in control. Hence, <u>option D</u> is the correct answer.
Coal mining is known for in Australia. Hope this helps! Happy Studying!
Answer:
We saw this most clearly in Vietnam and Singapore during its first wave of the pandemic. Leaders who made decisions based on medical and scientific ... and political calculations have not been able to get ahead of the situation. Indeed ... Thailand had elections in March 2019
Explanation:
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