This is because they train extremely hard in order to sustain stamina and endurance so, their bodies don't get the chance to build muscle because they burn more than they consume.
Answer:
Diorite is a course-grained igneous rock that forms when magma rich in silica cools slowly deep within the Earth's crust.
Or Slow cooling in the upper mantle.
Explanation:
Answer:
1. All living things are composed of cells.
2. Cells are the basic units of structure and function for living things.
3. All cells come from pre-existing cells.
