The correct answer is C an tributary
Molten rock underground is commonly known as magma. Magma is a hot, semi-fluid or fluid rock material that exists beneath the Earth's surface.
It is formed through the partial melting of rocks in the Earth's mantle due to high temperature and pressure. Magma can vary in composition, depending on the type of rocks that melt and the degree of melting.
When magma reaches the Earth's surface through volcanic eruptions, it is then referred to as lava. Lava can flow out of volcanoes, and as it cools and solidifies, it forms various volcanic landforms such as lava flows, volcanic domes, and volcanic islands.
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Complete question
Molten rock under ground is called _____
B. Flood waters spread pollutants and diseases more rapidly.
C. Flood waters permanently damage crop soils.
D. Most cities are built in flood zones.
The correct answers are:
A. City buildings do not allow flood waters to recede;
The buildings in the cities are pretty much an obstacles for the flood waters, but they are also making it harder for the waters to recede because of that. This makes a real problem because big portions of the affected city can be under water for much longer period of time, thus more damage to be created, than if it was an open space.
B. Flood waters spread pollutants and diseases more rapidly;
The flood waters can take all sorts of things with them on their way, and very often they can bring in lots of pollutants of different sorts in the cities, and that can make an ecological disaster. Also, because of all the material with it, and creating high humidity, muddy, swampy environment for some time, usually in a period when it is pretty warm, lots of diseases can appear, and if they do, because of the terrible hygienic conditions it can cause quick spreading of them.
What factors make it difficult for scientists to classify world climate regions?
changing conditions and lack of accurate weather data
Answer:
Australian observers will see a first quarter of moon on the same day.
Explanation: