Answer:
Viruses can only replicate themselves by infecting a host cell and therefore cannot reproduce on their own. ... A primary reason is that viruses do not possess a cell membrane or metabolise on their own - characteristics of all living organisms. Viruses are non living and cannot reproduce on their own. Viruses lack most of the characteristics of living things. The aerage virus is large when compared with cells. Viruses can cause or help to prevent and treat disease.
Definitely #2 is the answer
Answer:
D. Ecosystem
Explanation:
The living beings and the non-living conditions of a region interact with each other. They together make an ecosystem. In the given study, the aim was to restore the above-ground vegetation of the region. The "above ground vegetation" of the region is part of its biotic factors. The "below ground soil" is a component of the abiotic factors of the region. Since the study focused on both biotic and abiotic factors of the region, it focused on the ecosystem.
This happens because of the clouds in the sky that cover a portion of the moon,
