1. For every chlorine atom, there is
chlorine atoms is
sodium atom. Therefore, the ratio of sodium atoms to
2.
The Chemical formula for the compound that forms between sodium and chlorine is...
3.
For every atoms of calcium, there are
calcium atoms to chlorine atoms is
Jatoms of fluorine. Therefore the ratio of
4.
The chemical formula for the compound that forms between calcium and fluorine is...

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

i think its the first one

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.