Answer:
the answer is the second option.
carbohydrates, lipids, proteins and nucleic acids are biological molecules essential to sustain life in living organisms.
Answer:
Tooth enamel is the hardest substance in the body.
This resilient surface is 96 percent mineral, the highest percentage of any tissue in your body – making it durable and damage-resistant.
Answer:
phospholipids
Explanation:
Lipids of cell membranes include phospholipids composed of glycerol, fatty acids, phosphate, and a hydrophobic organic derivative such as choline or phosphoinositol.
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Darwin's theory of evolution by natural selection can explain how antibiotics are becoming defective because the bacteria that is trying to be fought off might have had a mutation making it more likely to survive. Once that surviving bacteria makes offspring most of the first generation will die from the antibiotic but soon all of their offspring will produce a resistance to that antibiotic.
