Answer:
can you send a picture of this question, because I can't read all the answers.
There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water.
In 1990 rice production= 350 million tons
In 1999 rice production = 400 million tons
400-350= 50 million ton increase
50/350=.1428 To calculate the percentage increase you divide the total amount increased by the initial amount to determine the percent.
Therefore the world rice production increased by approximately 14% from 1990 to 1999.
The use of chemical fertilizers in agriculture in the last few decades has led to a marked increase in agricultural production. The addition of chemical fertilizers to crops ensures that plants receive the correct formulation of nutrients that are necessary for growth. Plants will mature faster and produce more when this is done. Fertilizers also enable the use of agricultural lands to be ongoing as there is no need to rest the soil to allow nutrients to naturally build up. Growing can, therefore, be continuous all year round, leading to increased production.
