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In order for efficient gas exchange to take place, an exchange surface, such as the alveoli in the lungs, should have the following: a large surface area to volume ratio, so that diffusion can occur at a ...

Asexual reproduction occurs when the offspring comes from a single parent. This results in offspring with the same genetic composition as the parent. Sexual reproduction occurs when a male gamete and a fe...

The alveoli in the lungs have a high surface area to volume ratio that provide a higher rate of diffusion. They have very thin walls which are one cell thick that allow fast gaseous exchange between the a...

As we know, fertilisers are used by farmers to increase crop yield, and artificial fertilisers in particular are very high in nutrients such as phosphorus and nitrogen which stimulate plant growth. Howeve...

Respiration is the process of transferring energy throughout cells within an organism. Energy is required for a lot of processes to take place in organisms such as: movement - for muscle contractions to t...