The answer is A.) Theoretic
(hi, i dont know about this one personally, but i found an answer somewhere else on the internet thatll hopefully help u)
Answer: They consist of long chains of C, H, and O.
Explanation:
In terms of chemical composition, lipids differ from nucleic acids and proteins because they mostly just contain carbon, hydrogen, and oxygen (except for phospholipids which of course contain phosphorous). In addition to those elements, proteins contain nitrogen and sulfur, and nucleic acids contain nitrogen and phosphorous.
Carbohydrates share the C, H, and O composition as lipids, but they differ in structure. Lipids are generally exist as triglycerides, which consist of a triple hydroxyl alcohol (glycerol) that has bonded to three long-chain carboxylic acids (fatty acids) in a triple condensation reaction. Carbohydrates on the other hand are made of carbon ring structures that either remain alone or polymerize into long polysaccharide chains.
Solid. They're all stuck together and they cannot move anywhere, whereas liquids and gasses flow and bounce around as they please. Hope this helps!!
Ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA and similarities of embryos.
<span>A psychological response to an out-of-the-ordinary stressor defines the posttraumatic stress disorder (PTSD).
When people are exposed to a traumatic event, such as war, or sexual assault, or generally any type of threat or tragedy, they may develop PTSD as a result. This means that the person will still have strong and negative emotions, such as fear, or hatred, months or years after the event occurred, and it is very difficult to treat.
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