It is A because it isn't D. continental drift really happened. C. They separate as plate tectonics are constantly moving. and B. Continental drift is real and the continents have clearly changed. A is the best answer.
For humans, population density is the number of people per unit of area, usually quoted per square kilometer or square mile (which may include or exclude, for example, areas of water or glaciers). Commonly this may be calculated for a county, city, country, another territory or the entire world.
The Correct Answer : <u>Flooding the fields causes the soil to degrade so weeds cannot take root.</u>
Rice has a submerged growth state while most weeds do not. Therefore, flooding rice fields reduces the growth of these less robust pests without negatively affecting the rice crop. Flooding the fields also deters many kinds of vermin that would otherwise live in the soil and harm the rice plants because they cannot breathe underwater.
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<h3>What is Pesticides?</h3>
Pesticides are chemicals that may be used to kill fungus, bacteria, insects, plant diseases, snails, slugs, or weeds among others. These chemicals can work by ingestion or by touch and death may occur immediately or over a long period of time.
<h3>What is Herbicides?</h3>
Herbicides are used to kill undesirable plants or “weeds”. Some herbicides will kill all the plants they touch, while others are designed to target one species.
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Therefore, we can conclude that the correct option is B.
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Solution. Models are being used as a simplified representation of an object, idea, or an event that is too complex, too small, or too big to study. Scientists use models in order to show how a certain phenomenon occurs and to answer the questions regarding it.
<h3>PLEASE YOUR INDIAN PLEASE LIKE</h3>
The answer is diffration hope this helped!
