Answer: B
Explanation:
Process of elimination. C and D are out. A doesn’t really make sense in the question. So it’s B.
Answer:
True
Explanation:
Thus, an aquarium is self-perpetuating functional unit. Therefore, it is known as ecosystem. Since the fishes and plants and others are added by man, so it is known as artificial ecosystem. What are trophic levels?
Secret services, health services, food services, clothe services, etc.
Answer:
life expectancy at birth, educational attainment
Johnny brings a week’s supply of baloney and cigarettes, and a paperback copy of Gone with the Wind.
Not sure about the explanations but hope i helped.
