I don't know the real answer because you didn't attach the choices, but Adenine (A) is always paired with Thymine(T) and Guanine (G) is always paired with Cytosine (C).
Acid rain, if I understand the question correctly.
Explanation:
The non living things in its environment is called a " matrix,"
A matrix is what supports a non living thing to reproduce, triple its existence & reproduce in mass quantities, like soil bacteria, and others..
Answer:
Roots help a plant grow by absorbing the water and nutrients from the soil
Explanation:
Answer: rising sea levels
Harsher/more frequent natural disasters