A. because the hormone secreted is parathormone which regulates the calcium in the blood.
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B) Genotypes are directly selected
The percentage of these products which are recycled include the following:
- 50% Aluminum
- 25 % steel
- 60% copper.
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What is Recycling?</h3>
This is defined as the process in which different types of waste are converted into usable materials through different processes and techniques.
Recycling is important as it helps to reduce incidences of pollution and wastage thereby improving the quality of living for humans and other organisms present on Earth. The percentage of aluminum, steel and copper products being recycled can be seen above.
Read more about Recycling here brainly.com/question/2055088
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The promise of jobs and prosperity, among other factors, pulls people to cities. Half of the global population already lives in cities, and by 2050 two-thirds of the world's people are expected to live in urban areas. But in cities two of the most pressing problems facing the world today also come together: poverty and environmental degradation.
