Mendeleev was the first chemist to organize the periodic table according to their mass. He also created groups. <span />
Heterozygous is having 2 different alleles of a certain gene, meaning one is not dominant. Instead one is a recessive such as Aa
It is domian, kingdom, phylum,class,order, family, species. aka. King Philip coughed on Fred and then he got sick
In the stomach, food undergoes chemical and mechanical digestion. Peristaltic contractions (mechanical digestion) churn the bolus, which mixes with strong digestive juices that the stomach lining cells secrete (chemical digestion). As food travels from your mouth into your digestive system, it's broken down by digestive enzymes that turn it into smaller nutrients that your body can easily absorb. This breakdown is known as chemical digestion.