How is calcite harmful to humans?

What are 15 things in our solar system? Which structure is water most likely to pass through in the cell? Is the vesicle found in plant or animal cells? The majority of drivers involved in collisions are? Which macromolecule would be the best source of building materials for the weight lifter's body? How pollen grain is specialised? What the color of of salt after crystallization? What is freezing point of bromine expressed in degrees Celsius? What kind of map would a cartogapher make to show were two highways cross? Which if of the following tube contains no anticoagulants? What is the purpose of the egg lab? What is a pane? How does wind effect currents and tides? What do scientists hope to discover through use of the Mars Reconnaissance Orbiter? How much energy does a 5 watt give away? Given the structure and location what parts of the nucleus which would be more probably involved in chromosome location? Is sand and salt homogenous? Which gas in the atmosphere saves us form the UV rays of the sun? What is 0.55 lb flour in US measurements? What organelle is the battery of the cell in an animal and a plant?