Answer:
c lower oxygen levels
Explanation:
the higher up the person is the closer to the atmosphere so there is less oxygen
Answer:
D. none of the above
Explanation:
The only things that can live without oxygen are related to being microscopic like bacteria.
Answer:
New Homes
Explanation:
Without building additional housing for the people you wish to have there, it is impossible to increase the population.
Answer:
B
Explanation:
A pit is a tiny depression which is found on the surface of the tooth.
Fissures are the grooves that occur naturally on the biting surfaces of teeth.
Thus, pits and fissures are located on the lingual surfaces of the maximillary first molars because of the lingual fissures on the max molars.