Answer:
D. a higher number of double bonds between carbon atoms in their structures.
Explanation:
The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.
The nitrogenous base found in DNA but not RNA is called thymine. That's what it bonds to.
Answer:
El pez que cultiva algas.
El cangrejo bailarín.
Explanation:
Penicillin was an accidental discovery I believe
