Deforestation is the largest challenge which is currently being faced by the Amazon rainforest. Soy farming and cattle ranching is further increasing the problem of deforestation. The continually disappearing wild lands are a matter of concern. Hydro-electric dams being built are also causing problems.
These problems can be tackled by adopting alternate techniques and correctify the impact of cattle ranching and soy farming.
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:
C. San Francisco
Explanation:
As the nearby San Andreas, and Hayward faults are responsible for much of tectonic activity i this region. Hence it is more likely that places located close to this would get a Tsunami generated by displacement of earth's floor due to earthquakes. Also many islands and bays that are constructed earlier are also disturbed time to time by this.
Explanation:
Jupiter is the fastest-rotating planet in our solar system, it only takes at about 10 hours to complete its one rotation. The evidences for the fastest motion of Jupiter is it's gravity. Jupiter is the vacuum cleaner of planets or is having the highest gravity. The more the rotation the more the gravity. That's why Jupiter is having the highest rotational speed as it has the highest gravity.
Due to this we find the Jupiter is having the highest natural satellites. Also the asteroid belt is present between the Mars and Jupiter.
Answer:
New Orleans, LA (2 m below sea level)
Explanation:
In this examples, we can see that the places with the highest altitude (meters above sea level) are also the places with the lowest atmospheric pressure. Therefore, we can conclude that the opposite is true too. The places with the lowest altitude are the ones with the highest atmospheric pressure. The place with the lowest altitude is New Orleans, as it is located 2 m below sea level.
