Answer:
I'm pretty sure 2 and 4 occur before cell division and 3 doesn't. I'm iffy about 1 but I'm leaning towards yes. I hope I helped and didn't just sabotage you.
If predators eat too many keystone species, it can lead to the ecosystem becoming unstable (Option B). A keystone species helps to define an entire ecosystem.
Keystone species are species that maintain the homeostasis (stable state) of the ecosystem.
In consequence, the lack of these species in an ecosystem would change it or cease to exist altogether.
An example of a keystone species is the jaguar that feeds herbivorous species capable of decimating plants in an ecosystem.
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Answer:
1. Linear chromosomes with centromeres and telomeres that facilitate sexual reproduction
2. 3 dimensional DNA architecture to support control of transcription
3. Chromosome structure that controls packaging and expression.
Explanation:
The Eukaryotic genome is more complex and possesses a large number of base pairs compared to the prokaryotes.
The eukaryotic genome is arranged in a structure that they can be passed on easily to the offspring that is the linear DNA becomes condensed and form chromosome structure with a centromere is the center and telomeres at the end.
The chromosome structure allows the easy transcription of the genome and the controls the expression and packaging that is at some point it becomes condensed and at some it is relaxed.
Since the eukaryotes possess a membrane-bound nucleus, therefore, the option is incorrect.
Thus, the selected options are correct.