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TPO 43 - Question 4
Population Changes
Populations of living beings are constantly changing. The number of humans, animals, insects, or plants living in a given area can vary because of two kinds of factors: biotic and abiotic. Biotic factors are living factors that can influence the size of populations, such as predators or other species competing for food. Abiotic factors are nonliving things in the surrounding environment that can cause population changes, such as weather or sunlight. Biotic and abiotic factors cause continual changes in the number of individuals that make up a population of organisms.
Using the examples of mice and rabbits from the lecture, describe the two different types of factors that can cause population changes.
Speaking recording
Votes
This speaking topic by users
| Post dates | Users | rates | Contents |
|---|---|---|---|
| 2018-07-18 | Mennatallah | 66.00 | Check this speaking |
| 2017-07-05 | mgrajapt | 71.00 | Check this speaking |
| 2017-03-19 | mahabub | 50.00 | Check this speaking |
| 2017-02-21 | mgrajapt | 70.00 | Check this speaking |
| 2017-05-08 | mahabub | 50.00 | Check this speaking |
Speaking category
Speakings by user hipax
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- Do you agree or disagree with the following statement? Parents should be involved in the process of helping their children to choose a career. Use specific examples and details to support your opinion. 50
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on vocabulary words:
No of characters: 614.0 592.248995984 104% => OK
No of words: 149.0 155.574297189 96% => More words wanted. You may: choose simpler words or speak faster or remove hesitations or remove long pauses, and fully use the time, do NOT save one or two seconds.
Chars per words: 4.12080536913 3.80514564318 108% => OK
Fourth root words length: 3.49378814695 3.525876923 99% => OK
Word Length SD: 2.12025309265 1.79077849142 118% => OK
Unique words: 105.0 93.7148594378 112% => OK
Unique words percentage: 0.704697986577 0.604071249207 117% => OK
Syllable count: 198.9 185.844578313 107% => OK
Avg_syllables_per_word: 1.3 1.19417670683 109% => OK
Performance on coherence:
Topic speech coherence ratio: 0.183021841824 0.0650381309087 281% => Good job. The more, the better.
Acoustic performance on paragraphs:
How many acoustic paragraphs: 2.0 4.35341365462 46% => OK
Average paragraph length: 74.5 68.503853103 109% => OK
STD paragraph length: 16.5 21.3332995233 77% => OK
Average paragraph duration: 29.75 25.9943957902 114% => OK
STD paragraph duration: 4.85 7.84667146824 62% => OK
Acoustic performance on sentences:
How many acoustic sentences: 36.0 42.0642570281 86% => OK
Average acoustic sentence length: 4.13888888889 4.02192344571 103% => OK
STD acoustic sentence length: 2.34701675629 3.1217529195 75% => OK
Average acoustic sentences duration: 1.58833333333 1.45093177766 109% => OK
STD acoustic sentences duration: 0.776478875723 0.99851816184 78% => OK
Acoustic performance on acoustic silence:(An acoustic silence means a little pause between two or more words)
How many acoustic silence: 30.0 39.0421686747 77% => OK
Total acoustic silence duration: 5.5 7.12997991968 77% => OK
Average acoustic silence duration: 0.183333333333 0.185688545393 99% => OK
STD acoustic silence duration: 0.212623820135 0.155154303396 137% => OK
Acoustic performance on acoustic words:
Total word duration: 49.07 47.1480722892 104% => OK
Average word duration: 0.32932885906 0.305395592593 108% => OK
STD word duration: 0.179131628067 0.189427763521 95% => OK
Disfluencies: like hesitations, or 'ehn' or taking a long time to pronounce a word:
How many disfluencies: 9.0 7.94979919679 113% => OK
Total_disfluencies_duration: 6.54 6.2937751004 104% => OK
Total acoustic noise duration: 3.04 3.39508032129 90% => OK
Acoustic rates:
Total speech duration: 59.5 59.7592369478 100% => OK
Compare to expected duration: 0.991666666667 0.995987282463 100% => OK
Rate of silence: 0.504201680672 0.656000678711 77% => OK
Rate of speech: 2.50420168067 2.60215298798 96% => OK
Rate of speech by unique words: 1.76470588235 1.56821927147 113% => OK
Rate of word duration by unique words: 2.13980028531 1.99336655568 107% => OK
Average articulation rates: 0.352840120805 0.317803793328 111% => OK
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Rates: 80.0 out of 100
Scores by speech e-grader: 24.0 Out of 30
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Note: the speech e-grader does NOT examine the meaning of words and ideas.