The negative impact humans could have on an ocean ecosystem is pollution, which can lead to a mass extinction on the wildlife.
Because comets are darker colored so they need light to shine on them to be seen in the dark skies of space.
You should ask your teacher to be sure, but I think that you teacher meant like the mode of transmission.... Like genetically inherited and such.
Answer:
Due to increase temperature and drought condition.
Explanation:
Succession refers to the changes occur in the structure of a biological community with the passage of time. Global warming has a great affect on the succession events because the vegetative cover present in that area vanished due to increase in temperature which is unbearable for the vegetation and also drought condition occurs in that area due to no rainfall. Instead of vegetative cover, a new plant specie formed which has the ability to exists in that environment.
