I believe the correct answer from the choices listed above is the third option. It would be gravel that is the most permeable. It is the most porous and the the size of the pores are large enough to allow substances to seep in. Hope this answers the question. Have a nice day.
Answer:
2. the line separating Australian animal species from non-Australian species
Explanation:
The Wallace line is an animal boundary line drawn by Alfred Wallace that separates Australian fauna species from non-Australian fauna species. It's a transitional zone between Austrialia and the Asia continent. The animals found in south East Asia is so much different from those found in Australia, hence the line drawn. The line is just one of the many biogeographical borders in the world separating geographical regions with not so similar group of plants and animals.
The correct answer is A. chemical fertilizers and pesticides.
Organic farming is a method of farming in which crops are cultivated in such a way to keep the soil alive and in good health by using organic waste of crop, animal and farm waste and aquatic waste. Other biological materials such as beneficial microbes are added to the crop field which release nutrients to the crops. Use of chemical fertilizers and pesticides should be limited as these are non-biodegradable and cause harm to the ecosystem and soil.
Answer:
Upon contact with the continental plate, the oceanic plate, being denser, begins to sink into the asthenosphere. This sinking of the plate is called subduction. Once in the asthenosphere, the oceanic plate melts due to high temperatures. The melts thus formed come to the surface in the form of volcanic eruptions, forming a volcanic chain of subduction.
When two plates come in contact, a collision is created, which leads to earthquakes or sediment wrinkles, followed by their elevation and mountain formation.
<em>Thus, the mountain ranges were formed: the American Cordillera and the Himalayan mountains.</em>
