Answer:
Observable
Explanation:
An observable phenomenon leads to an hypothesis.
Answer:
B) ecosystem, community, population, individual
Explanation:
An ecosystem is the most inclusive level of the ecological system for it comprises of both living and non living organisms that are joined together through the nutrient cycle and the flow of energy. An ecosystem is made up of different communities.
A community comprises of organisms of different species that live and interact with one another in the same habitat.A community is formed by different populations.
A population is made up of many individuals of the same species that can interbreed to give rise to viable offsprings and end up forming a community.
An individual is a living organism that cannot interbreed with other individuals giving rise to a viable offspring.It is the least level in the ecological organisation.
Well, Euglena is in phylum Euglenophyta, and Paramecium is in phylum Ciliophora. You can verify that with a quick Google search.
<span>Does that sort of narrow it down? :)</span>
Ferns reproduce by spores, Conifers reproduce by seeds. Differences also exist in the root and stem structure. Neither Ferns nor Conifers have true leaves, Ferns have fronds and most Conifers have needles.
Hope this helped.
