The number of children born to an average woman in a population during her entire reproductive life is called total fertility rate (TFR).
The total fertility rate (TFR) is the total number of children likely to be born to a woman in the population if she were subject to the childbearing years giving birth to children according to an existing schedule of age-specific fertility rate. The total fertility rate is obtained by adding the single-year age-specific rates at a specific time.
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Answer: There are three energy level in the energy pyramid. The producers have the 100% energy and the primary consumers feed on the producers and obtain 10% energy the producers have and secondary consumers feed on the primary consumers.
The energy left at this level is 10% of the energy that primary consumers have.
Hence, Producers will have 475,650 kilocalories
Primary consumers will have 475,65 kilocalories
Secondary consumers will have 4756.5 kilocalories
Answer;
-An influenza virus particle
Explanation;
-An influenza virus particle is bigger in size compared to a ragweed pollen grain. Influenza virus particles have a size of 80–120 nm. However, the length of each particle varies considerably, owing to the fact that influenza is pleomorphic, and can be in excess of many tens of micrometers, producing filamentous virions.
-On the other hand, researchers found that ragweed pollen grains release SPPs in the size range of 0.5–4.5 μm, small enough to reach lower airways.
No girls mature faster than boys most of the time