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.
Answer:
A
Explanation:
They will all be formed around carbon chains and rings
immediately before passing into the large intestine, the food mass must pass though the <span>ileocecal valve.
</span>This muscle valve is part of the gastrointestinal system and separates the small intestine and the large intestine. The valve <span>opens when a bolus of food passes from the small intestine into the large intestine (your inner sewer pipe) during peristalsis.</span>
Answer:<u><em>When water freezes, it contracts, decreasing the water level in a lake. Water in a lake freezes from the bottom up, killing most aquatic organisms. When water in a lake freezes, it floats, providing insulation for organisms below.</em></u>
Explanation:
polarity of a molecule deals with the presence of net charges and partial charges. this has nothing to do with its symmetry which is determined by the molecule's structure
