Answer:
Declining crude birth rates.
Explanation:
Birth rate may be defined as the number of births takes place per year per thousand of the population. The birth rate and death rate may change the population dynamics.
The developing countries shows the expanding population graph as they have more number of people of the reproductive age. The advancement in the medical field results in the decline birth rate that causes the decline of the nature resources.
Thus, the answer is declining crude birth rates.
Does this help?
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<u><em>The glucose (sugar or plants food) is then converted back into carbon dioxide which is vital during photosynthesis. This therefore means that when stomata is blocked photosynthesis will stop because the CO₂ level will decline within the leaf, stopping the reactions that are light-independent.</em></u>
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<em>~Hope this helps~</em>
Proteins in a protein complex are linked by non - covalent protein - protein interactions. The process of complex formation comprises of steps namely : ... An encounter complex is formed that either proceeds towards final complex or dissociates again.