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In a food chain, very little energy is passed onto the next trophic level - this is because living creatures create waste.  Energy passes out of the food chain in a number of ways, including; - energy use...

Firstly sweat is released from sweat glands onto the surface of our skin. This acts to decrease body temperature by causing thermal engery to be transfered away from the skin as the sweat evaporates.

 FSH 

it causes an egg to mature in an ovaryit stimulates the ovaries to release the hormone oestrogen.

Oestrogen

it stops FSH being produced - so that only one egg matures in a cycle...

1. Muscle - it contracts 

2. Gland - it secretes hormones 

When the core body temperature falls below the optimum, vasoconstriction occurs meaning blood flow to the vessels supplying the skin is reduced. This is beneficial as it reduces lost energy. The body also...