LOCAL ENVIRONMENT ISSUE:
People dump a lot of trash in the sea, and the sea creatures living there goes through a lot of trouble to live with all the muck getting in them. Of course, don't write it like that in your assignment - you'll get told off for the straight forwardness.
The heart of a lazy person pumps blood less efficiently than an athlete who has trained and prepared to achieve a high performance, this can be understood with the example of football players who will play in other countries that have a higher altitude than the country of origin and has to go before to get used to the rarer air
Work done= <span>force x distance moved in the direction of that force so: 200 x 15 = 3000J=4kJ</span>
<span>"The phrenic nerve is a nerve that originates in the neck and passes down between the lung and heart to reach the diaphragm"
The answer therefore is the Phrenic nerve.
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The red blood cels becaus ethey transport everything in the body\