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A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is :
Options
(a) 15
(b) 5
(c) zero
(d) 10
Correct Answer:
zero
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Ecology and Ecosystem
(37)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Attraction of water molecules to polar surfaces is known as
- If for some reason goblet cells are non functional, this will adversely affect:
- Which one of the following is surrounded by a callose wall?
- A non proteinaceous enzyme is
- Exchange of gases in the alveoli of lungs takes place through
Topics: Ecology and Ecosystem (37)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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