Answer: C
Explanation: Thymine pairs with Adenine and Cytosine pairs with Guanine.
Answer:
Flood barriers are very affordable, lightweight metal barriers may be installed in different places and taken away when water disappears.
Explanation:
The atomic number of an element is the same as the number of protons in the nucleus of an atom
The active site is complementary to its substrate due to its specific 3D structure. The substrate fits in to one specific active site so an enzyme will only bind to one substrate. They are SPECIFIC. Lock and key theory.