The Túngara frog is a tropical species of frog, upon which many mate choice studies have been performed. The male Túngara frog has a characteristic ‘whine-chuck’ mating call which has been exploited in these studies.
In animals all waste products must be excreted from the body in some manner. The urinary system is involved in the excretion of nitrogenous waste products such as urea, uric acid or ammonia. The excretion of nitrogenous waste from animals is important because if it is allowed to build up, it can [...]
The method of digestion which an animal uses depends on its diet i.e. carnivore, herbivore or omnivore. For example not all mammals are carnivores (e.g. dogs and cats), herbivorous mammals include rabbits, chinchillas, guinea pigs etc.
Generally, carnivores consume animal tissue which is similar to their own; therefore all the body needs to do [...]
Respiration is the process of obtaining sufficient oxygen from an organism’s environment to support its cellular metabolic requirements. Respiration is not just the mechanical process of breathing – the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction. It is also the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and ATP (energy).
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