Beginning in the mid 1600's earth entered into a mini-ice age. 1815 was known as the "year without a summer" and snow fell in many european countries during the summer months. the year without summer was believed to be the result of a major volcanic eruption, mount tambora. although the exact cause of the mini ice age is unknown, scientists speculate that the low temperatures correspond with a) very low sunspot activity. eliminate b) the industrial revolution. c) increased greenhouse gases. d) a growing hole in the ozone.

Option A is the correct answer

Reason:

Due to the low temperature and very high rainfall, the Crop could not grow properly in European nation. Due to this , the people devoid of food reached at the verge of dying. After certain point of time there was feminine.  The effect were so devastating that these lasted even after the winter season was over. Lack of food raised the price of food item

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: