Answer:
An underground cavern collapsed
Explanation:
I did research
Answer:
D
) ratio of neutrons to protons in each element.
Answer:
No, this would not be a symbiotic relationship.
Explanation:
Symbiotic relationship is between plants and fungi.
Answer:Exercise increases the rate at which energy is needed from food, increasing the need for both food and oxygen by the body. This is why when we exercise both pulse/heart rate and breathing rate increase.
Explanation: Hope this helps
