<span>The current estimated total number of species on earth is between five million and hundred million.
The reason why it is hard to get an accurate count is because some species are very hard to find reason being that of nocturnal habits, location, and the size.
All the species which have ever lived on earth are being estimated to be extinct. It is approximately one extinction for every million species for years. Mammals species like typically persist for one million years.</span>
You had the right idea about the other option, generally if something is organic it has some sort of atom of carbon within the molecular compound so that limits between the two answers.
The compound is COOH meaning it is a CO² + H (Carbon dioxide + hydrogen)
It becomes an acid because the Hydrogen is a negatively charged ion and makes the compound acidic when bonded to the O
This is a type of acid that also occurs is amino acids, the building blocks of life.
Hydrogen bonds hold together the atoms in a water molecule.<span> A single water molecule is made up of two hydrogen atoms and one oxygen atom</span>
B: single celled because protest has more than one cells
Answer:
The first part of the small intestine is called duodenum
Explanation:
The small intestine is a tightly folded tube which connects to the stomach on the top end and to the large intestine on the bottom end.
The small intestine consists of three parts:
- jejunum (absorbs sugars, amino acids, and fatty acids)
- ileum (absorbs remaining nutrients that did not get absorbed by the duodenum or jejunum)
Duodenum is responsible for completing the first phase of digestion. In this section of the intestine, food is mixed with enzymes and bile which help break down food.
