Answer:
<h3>Ocean salt primarily comes from rocks on land. ... Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.</h3>
Answer:
Planting agriculture is a trading farm where cash crops are specifically cultivated for sale on a large scale.
Explanation:
- This has led to infrastructure development, e.g. roads, schools, urban hospitals.
- Many workers are employed which leads to better living standards.
- They increase the government's tax base and thereby increase the income for road development.
- Plant farms offer a market for the products of the out-grower and thus guarantee a constant flow of revenue.
- Plantation farms encourage research that leads to better and better crops.
Answer:
The Earth is round. There is evidence that can prove that.
Explanation:
Answer: get smaller
Explanation:
Parallax is the angle formed by the observation lines to a very distant object from two separated points.
The procedure to measure this distance in the case of a star, is based on observing it from two different places far away from each other, and then through trigonometry reach to the following relationship:
(1)
Where:
is the distance from Earth to the observed star (in Parsecs 
)
is the earth-sun distance that is equivalent to an astronomical unit (1AU=150000000km)
is the angle of the parallax (in arc seconds 
)
Now, the distance to an object (measured in parsecs) is the reciprocal of the parallax (measured in arcseconds). Then, in its simplified mode, the stellar parallax is given by the following equation:
(2)
As we can see, there is an inverse relation between the distance and the parallax :
(3)
Hence, if the distance is increased by a factor of 10, the parallax is decreased by a factor of 10.
In other words, the parallax angle gets smaller.
