I believe the answer is A.
On February 5, 2008, a super tornado outbreak killed 57 people across the four states and 18 countries. The affected areas were the Southern Part of the United States and the lower Ohio Valley. There were eighty-seven tornados during this time and lasted for about 15 hours from Feb. 5 - Feb 6.
They are all part of the digestive system, they all break down food, they all have enzymes
The answer is D. This is caused from photosynthesis.
Answer: Plants
Explanation: Plants are all ways at the start of the food chain becuase they are the only thig that can make their own food. Herbivores eat the plants to gain energy and carnivores eat the herbivores to gain their energy.