Answer:
Scientists have identified a key difference in the way our immune systems respond to viral and bacterial pathogens. ... These hormone-like molecules control communication between cells to trigger defensive action by the body's immune system when pathogens such as bacteria, viruses, or parasites are detected.
Explanation:
Natural Factors:
Ocean Currents, Distance of the Sea, Wind Directions, Topography, Your country's distance from the equator , Volcanic Eruptions, The sun, and especially humans.
Cloning is a process by which an organism that is genetically identical to another is made. This means the answer is B.
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Cellular respiration is the metabolic reaction inside the cell to convert chemical energy into ATP. Biomass is the total mass of organisms at a trophic level.
<h3>What is exothermic reaction?</h3>
The type of reaction in which releases energy after its completion.
- Cellular respiration releases energy because it is an exothermic process in which energy is released as a by-product of the reaction.
- Organisms are larger in size at higher trophic levels, but their smaller numbers result in less biomass.
Thus, being exothermic in nature, cellular respiration releases energy and because of less numbers, there is less biomass at high trophic levels.
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