Answer:
I'm not sure what is unclear but I can try to help...
Explanation:
So the group is the number at the top and is verticle. So H,Li,Na, and K share the same Group, 1.
The period is the number at the side and is horizontal. Soo H and He are Period 1.
Now using this information we can find the specifics of each element.
Chlorine, for example, is Group 17A and Period 3 because it matches those.
Let me know if you need further explanation :)
Answer:
15. C
16. C
17. B
18. ?
19.B
20.A
21.B
Hope this helps, sorry I didn't know 18.
The answer to the above question is Fatty acids.
<h3>What are
Fatty acids?</h3>
A fatty acid is a carboxylic acid with an aliphatic chain that is either saturated or unsaturated. This definition applies to chemistry, particularly biochemistry. The majority of naturally occurring fatty acids have an unbranched chain with 4 to 28 carbon atoms, which is an even number. In some species, like microalgae, fatty acids make up a significant portion of the lipids (up to 70% by weight), but in other organisms, they are present as one of the three main types of esters: triglycerides, phospholipids, or cholesteryl esters rather than in their solo form. Fatty acids are crucial nutritional sources of energy for animals in any of these forms, as well as crucial cellular building blocks.
To learn more about Fatty acids with the help of given link:
brainly.com/question/26353151
#SPJ4
Humans cut down forests so that they can build homes, factories, shops etc.
This impacts wildlife because it destroys their home.
Answer:
The rapid emergence of resistant bacteria is occurring worldwide, endangering the efficacy of ... The antibiotic resistance crisis has been attributed to the overuse and misuse of these ... In response, new beta-lactam antibiotics were discovered, developed, and deployed
Explanation:
