Enzymes and antibodies are examples of proteins. The correct option among all the options that are given in the question is the first option. A protein is basically an organic compound that has large molecules. I hope that this is the answer you were looking for and it has helped you.
It could be pollution from a wastewater treatment plant , an industrial plant that have entered the pond or elements from septic tanks, stormwater coming in from farms, urban areas and residential homes and even from rainfall, When the climate is warmer , right temperature, and sunlight
Answer
Eventually the cricket frog population may die out because of all the negative factors. If there are too many mosquitoes, then the frog population can begin to die out. With pollution, the frogs do not have a safe and clean environment to leave in and can get infected, sick, and can die after a while. Crocodiles need to eat, so they are also bringing down the population.
Answer:
C: the presence of secondary xylem as wood tissue
Explanation:
C: the presence of secondary xylem as wood tissue, this help the tree get harder and stronger but not with population and the spread.