Answer:
this is because Steel is more difficult to magnetise and demagnetise but an iron core makes a temporary electromagnet because its lose its magnetism when the switch is open and and steel core is used to make a permanent electromagnet
Answer:
The correct answer is D. proliferation and differentiation.
Explanation:
Primary immune response occurs due to the first exposure of an antigen to the immune system. The primary immune response is generally delayed by many days because it takes time for B and T cells to become cloned and to proliferate and differentiate.
Then after several days of proliferation and differentiation of activated T and B cells, T cells become effector T cells and B cell becomes plasma cells which then eliminates the antigen. Memory B and T cells are also produced during this process which helps in generating a quick immune response during the second and subsequent exposure of that antigen.
So the correct answer is D. proliferation and differentiation.
Answer:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. Trophic level transfer efficiency (TLTE) measures the amount of energy that is transferred between trophic levels.
Explanation:
hope this helps!
B. Abiotic
Explanation:
The role of flowing water in this ecosystem is abiotic.
- Abiotic factors in an ecosystem are the non-living factors that shapes an ecosystem.
- An ecosystem is made up of both living and non-living components.
- The action of running water is termed erosion and it shapes the land form as seen in the badland.
- This is an action not related to life and living organisms.
- It is an abiotic factor.
Learn more:
Abiotic factors brainly.com/question/1542938
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