Large visible crystals indicate an igneous rock that cools quickly true or false

The answer is False

Explanation:

The size of crystals in an igneous rock will usually tell whether it hardened rapidly or slowly. If an igneous rock is smooth and separate crystals cannot be seen, it hardened quickly. If large crystals are visible, like fruit and nuts in a fruitcake, the rock crystallized slowly. Slow cooling gives molecules in the melted rock time to move by heat vibrations. The moving molecules come in contact with other molecules of the same compound, or of a compound with similar physical and chemical qualities, and grow into bigger crystals.

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thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.