The correct answer is - True.
Depending on the quickness of the cooling of the magma, the size of the crystals is determined. If the magma is o=cooling on the surface or in a water body, than the cooling will be very quick, thus resulting in crystal of much smaller size, often not big enough to be seen with a bear eye. On the other hand, if the magma is cooling deeper into the ground, than it cools of much slower because of the high temperatures and pressures, which contributes to the creation of bigger clearly defined mineral crystal forms.
Answer:
D. form when headward erosion causes one stream to intersect another
Explanation:
Pirate streams -
It is the condition, when the drainage system of a river is directed to flow to to the nearby stream , rather than to its usual flow, is referred to as pirate streams.
This type of condition can originate by several reasons , like -
1. Erosion
2. Tectonic moments
3. natural calamity, etc.
Hence, from the given options , the correct statement regarding pirate streams is D.
I am pretty sure the answer is C. Depression