Answer:
A
Explanation:
Gram positive bacteria stain violet due to the presence of a thick layer of peptidoglycan in their cell walls, which retains the crystal violet these cells are stained with.
Ecosystems change when all of the above components listed change ie, living components of an ecosystem, nonliving components of an ecosystem, or their stability is disrupted.
Hence correct option is D.
- A community of creatures and their physical environment make up an ecosystem.
- Ecosystems can be terrestrial, aquatic, or marine and come in a variety of sizes.
- The term "biome" refers to broad classifications of terrestrial ecosystems. Ecosystems, the dynamic network of living and nonliving things in a place, change gradually over time.
- New plants and animals either thrive or suffer when they are introduced to a region. Sometimes thriving species suppress native species. The system as a whole starts to shift when this occurs.
- If the living components i.e., flora and fauna of the ecosystem change then there will be increase or decrease in food availability and either surge in predators or no predators at all. hence it will greatly affect the ecosystem.
- non living components such as temperature, water availability, natural calamities can also affect the ecosystem. it can lead to extinction or migration from one place while influx of immigration to another.
- if the stability of ecosystem is disrupted due to change in living and non living components then also the ecosystem will be affected.
hence all of the above options are correct.
learn more about Ecosystems here:brainly.com/question/842527
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Answer:
D. All the choices are benefits
Explanation:
Natural selection is when favorable traits stay in a population while unfavorable traits get weaned out. EX: There is terrain that is lightly colored and there are some moths there. They need to blend into the terrain to not be eaten by birds. So, the lighter colored moths live longer and can produce more offspring than the darker colored moths. Now, what happens if the color of the terrain changes due to a factory being put right next to it and causing the terrain to turn grey. The lighter colored moths will be eaten more than the darker colored moths so then he darker colored moths will be reproducing more and most of the moths will be darker colored.
Artificial selection:<span> is the intentional breeding for certain traits, or combinations of traits, over others, and is synonymous with "Selective breeding".
EX: the breading of certain dogs to produce the poodle.
I hoped this helped! Have a fantastical day!!! XD</span>
The answer to your question is E
