An economy based on trade
Bro it’s in Nepal and good afternoon
Housing shortages, inadequate services, and pollution
Answer:
After three half-lives, it is 7:1
Explanation:
- The rate at which the decay of the radioactive isotope is said to be half-life and is represented as the half-life of the atoms and the matter to disintegrate itself.
- The two radioactive isotopes are K 40 and Ar 40. After the K-Ar dating, they contain minerals such as the clay mica and the temphra minerals and Half-life of the K 40 is 1.3 more than 100,000 years i.e 10x9 years for Ar 40.
- <u>Thus the K 40 has to divide as three half-lives have passed if the ratio of argon to potassium atoms is 7:1. At the end of one half-life, the ratio of the number of argon to potassium atoms is 1:1. and two half lives its 3:1 thus after the third half-life it becomes as 7:1.</u>
Answer:
<u>Rising and falling of tides, Winds and thermohaline circulation in oceans.</u>
Explanation:
- As oceanic mass is always defined as a body of water which has commonly formed with the chemical and physical properties. Like temperature salinity and common water mass in the world are Atlantic bottoms, Deepwater basins.
- Depth of the oceanic water can be measured through the salinity or dissolved salt content in water, this affects the amount of freshwater in oceans. Deeper zones of water bodies are found near the trenches and valley bottoms.
- Winds are responsible for raising and falling of tidal waters in oceans and movement of currents produced in water masses affects the direction and flow of water bodies.
- Winds have a direct impact on the ocean warm water upwelling and other factors being the flow of debris etc.
