Answer:
my mother's oldest sister
The appropriate response is compound subject. A compound subject is a subject comprised of at least two straightforward subjects that are joined by a planning conjunction and that have a similar predicate. sentence may have more than one straightforward subject or basic predicate. A compound subject is at least two basic subjects that have a similar predicate.
Answer: The greenhouse effect is an ecosystem service which warms the Earth to temperatures which support life.
Explanation: The greenhouse effect involves water, carbon dioxide, methane, and ozone, which absorb heat that would otherwise be radiated out into space.
YW!!! <3 :]