L-serine is an amino acid that often is provided when intravenous feeding solutions are used to maintain the health of a patient. it has a molecular weight of 105, is produced by fermentation and recovered and purified by crystallization at 10 deg
c. yield is enhanced by adding methanol to the system, thereby reducing serine solubility in aqueous solutions.

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.