The answer is (b.) ecosystem. An ecosystem is all living organism in an area functioning together with nonliving factors of the environment. An Ecosystem is a community of the living organism that includes the producers, the consumers, and the decomposers.
Answer:
rainfall, changes in water level, earthquakes
Sound waves cannot travel through a vacuum. This is because sound waves move by actually compressing molecules--therefore in a vacuum it would be impossible for sound to travel. This is also why no sound can be heard in space.
As it is given in the question that both the plant belongs to same species and according to biological species concept, a species can be defined as the largest group of organisms in which any two two individuals of the opposite sex breed to produce a fertile offspring.
According to this the correct answer is D) They can produce offspring plants that also produce fertile seed.
