Chalk forms under relatively deep marine conditions from the gradual accumulation of minute calcite plates shed from microorganisms over millions of years. Therefore, chalk is very old indeed.
Hard rock, an example of soft rock is Barton-on-sea.
chalk
Crushing a chalk board is not recommended as it can create a mess and cause damage to the surroundings. If necessary, it is best to dispose of an old chalkboard properly by recycling or seeking professional assistance for dismantling.
Water is the solvent and chalk is the solute.
The effect the chalk has on ants is that it can penetrate their skin and dehydrate them. Chalk can slowly kill an ant.
Chalk
Back in the old days, information was posted on chalk boards. They would underline the favorite and thus it became known as the "chalk".
Old Harry is made from chalk ! Hope this helped :)
A Nicktoon series about a 10-year-old boy named Rudy Tabootie, and his best friend Penny, and his Chalk Zone friend Snap. This animated cartoon series involves a a world made of chalk called Chalk Zone. The chalk drawings Rudy draws come to life.
"Port for Chalk or Limestone", or "Seaport".
Hard rock, an example of soft rock is Barton-on-sea.
chalk
Old Harry
colored chalk sidewalk chalk dustless chalk
Some compound words with "chalk" are chalkboard, chalk dust, chalk line, chalk stick.
It is of Old English origin, and its meaning is "chalk landing place".
It could be quite harmful but it depends on how much chalk they ate. I suggest taking them to the doctor just to check that everything is ok.