Hydroxyapatite refers to one of the prime components of and an important element of usual teeth and bone. It forms the matrix of teeth and mineral of the bone. It is the hydroxyapatite molecule that gives the teeth and bones their rigidity. These molecules can combine together to produce microscopic clumps.
About seventy percent of the bone comprises of the inorganic mineral hydroxyapatite that comprises calcium carbonate, calcium phosphate, calcium hydroxide, calcium fluoride, and citrate.
<span>The will deform physically in a permanent way. Depending on Factors such as pressure and temperature the rock either continues to deform or fractures will occur.</span>
Answer: the leaves will start turning yellow and the stem or stalk will grow longer towards the direction of sunlight.
Explanation: lack of enough sunlight causes plant leaves to loose chlorophyll (the green pigment responsible for photosynthesis). Also auxin; a plant growth hormone will be secreted in the stem to stimulate growth towards the direction of sunlight.