Answer:
Two body sections (Head and trunk) and a pair of antennas.
Explanation:
Rudolf Virchow was challenged to a duel of sausages.
Although a small amount of variety has been passed down from Neanderthals, most human variation is derived from what was present in the population of homo sapiens that initially appeared in Africa.
<h3>Genes are a good illustration.</h3>
Your skin and hair colors, among other characteristics, are influenced by the genes you inherit. The possibility exists that Emma's mother possesses two genes—one for brown hair and one for red hair—and may have given her one of them.
<h3>Relevance of genes</h3>
The formation and operation of your cells are governed by the instructions found in your DNA. The building blocks of the body are cells. A billion cells work together to form every component of your body. Chromosomes are the structural elements that hold genes in place.
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Answer:
<h2>There are two kinds of digestion;
</h2><h2>i) Mechanical and ii) chemical digestion. </h2>
Explanation:
There are two kinds of digestion;
i) Mechanical and ii) chemical digestion.
Mechanical digestion involves physically breaking down the food into smaller pieces. It begins in the mouth as the food is chewed.
In the Stomach
The stomach is a muscular sac with three important functions:
i) It mixes and stores food until it can be further digested.
ii) It secretes chemicals that help break the food into more digestible forms.
iii) It controls the passage of food into the small intestine.
Chemical digestion involves breaking down the food particles into simpler nutrients that can be used by the cells.
In stomach, chemical digestion of mostly proteins occurs Secretions from the stomach lining consist of about two liters of HCl, pepsin, and other many fluids that make up gastric fluids. The fluid is acidic and it helps kill bacteria and many other pathogens. It also produced by the stomach lining usually keeps the acids from damaging the lining. If no mucus or too much acid is produced, peptic ulcers form.