Why are many bacterial infections more difficult to treat now than they were fifty years ago
1 answer:
Answer:
they mutate and become immune to modern medicine
Explanation:
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It should be pH (sorry if it’s wrong)
Answer:
A) central nervous system
B) Peripheral nervous system
The producers at the beginning of the Earth's food chain are plants.
Answer:
48g
Explanation:
Volume of rock=16cm^3 (1 ml=1 cm^3)
Density=3 g/cm^3
Mass=?
d=m/v
3g/cm^3=m/16cm^3
3g/cm^3*16cm^3 =m
Therefore, m= 48g
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