X and y chromosome thats when a cell divides each daughter
Answer:
If all frogs were to die off, a valuable food source will go missing in the food chain of many animals around the world after that the number of animals that eat the frogs will die off, then the animals that eat them will go hungry, and their populations will be devastated as well.
I think the nuclear membrane begins to break down, and the pair of chromosomes look like their are floating in the air.
Answer is B. Pioneer communities contain few species, while climax communities have many species.
Pioneer species are the first species that start life in an area. Their growth is fast and soon replaced by next community. Whereas, climax communities are made of many species. They are stable is not replaced by any other community. They are supporting new life.