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Describe the process of evolution by natural selection

Evolution by natural selection occurs through mutations within organisms of the same species that makes every organism slightly different. Those organisms with the favourable mutation for the environment wer...
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Answered by Tegan I. • Biology tutor
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Why is gas exchange in the lungs efficient?

Alveoli have a large surface area, allowing more oxygen and carbon dioxide molecules to diffuse across at one time.
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Answered by Christina P. • Biology tutor
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What is the equation for respiration?

glucose + oxygen = carbon dioxide + water
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Answered by Christina P. • Biology tutor
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How are mineral ions transported into the root cells from the soil?

Mineral ions are transported into root cells by INDIRECT ACTIVE TRANSPORT/UPTAKE. First of all, hydrogen ions are pumped out of the root cells' vacuoles into the soil. This creates a concentration gradient b...
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Answered by Marta S. • Biology tutor
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What is diffusion, and what are the factors that affect the rate of diffusion

Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration . This ...
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Answered by Delwin J. • Biology tutor
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