Answer: the Neolithic period
Explanation:
A period in history in which humans transitioned from hunting and gathering food to the farming of plants and animals is called the Neolithic period. People were starting to become farmers and their life got more settled.
This transition is also known as the Neolithic Revolution or the Agricultural Revolution.
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.
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Answer: C. Above the kingdom level
Explanation:
Hierarchical classification can be defined as the system of grouping living beings according to the level or orders. Domain secures the highest taxonomic rank in the biological hierarchical classification system. This lies above the Kingdom level. The life forms are classified into three domains, which are Archea, Eukarya and Bacteria.
Oppurtunity Cost of your decision
Nitric oxide accomplishes this by elevating cGMP levels.
- NO is a distinctive message. It is a gas, although it does dissolve in an aqueous solution.
- It is a free radical with an unshared electron, which will react with thiol groups on proteins to form new complexes.
- Unlike other second messengers, NO doesn't need energy to move inside and outside of cells. It can go where it wants, but it does not travel far because it is a reactive free radical.
- NO acts within the cell that produces it as a second messenger. It operates as a paracrine molecule able to travel 10–20 cell diameters to affect the biology in surrounding cells. It can form complexes with proteins like hemoglobin, glutathione, and other proteins and then separate from those complexes.
Therefore, increasing cGMP levels is necessary.
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