Answer:
he larger the crystals and the more mafic the composition
Explanation:
Temperature at which minerals crystallize can determine the nature of composition of the rock and the crystal sizes.
- When a magma crystallizes at high temperature, the mineral grains have enough time to aggregate around a nuclei.
- This makes the sizes big.
- Mafic minerals are know to crystallize at high temperatures.
- Felsic minerals differentiate at low temperatures.
True if it is a true or false question
When a cyclone's strongest winds do not exceed 61 kilometers (38 miles) per hour, it is called a tropical depression
Tropical cyclones are classified based on their wind speed. When the fastest sustained winds does not exceed 38 miles per hour (61 km per hour), it is called a tropical depression.
If the fastest wind is greater than 38 miles per hour (61 km per hour), it is called a tropical storm.
However, if the maximum sustained wind speed reaches 74 mile per hour (119 km per hour) it is referred to as a hurricane.
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Answer:
Geographic isolation
Explanation:
Geographic isolation -
It is considered to be the method by which the group of some specific living organisms gets isolated from rest of the organisms , which disables the species from sharing any genetic information , is referred to as geographic isolation .
The process of geographic isolation can be due to any accident or any coincidence .
Hence , from the given scenario of the question ,
The correct term is geographic isolation .
