The answer is...
<u>Closed</u> ecosystems do not experience any new input or output of energy and/or material.
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Answer:
Overfishing is the level of excessive capture of marine animals.
Explanation:
Overfishing poses a great threat to marine biodiversity and ecological balance. The abundance of populations of large predators such as cod, tuna and swordfish has decreased by 90% due to overfishing. If we continue fishing at the current rate, scientists estimate that by 2048 any fish in the sea will have disappeared. Our seas are vulnerable and sensitive and a sudden and significant change in the number of individuals of a species can put great pressure on their ecological environment and a change in the balance of the oceans, and even in the food chain of other species.
<span>Since the kid is having a plaster cast on his lower left leg, the nurse should give good care by just using the palms of the hand when handling the cast. As the child is 14 year old which is growing years of the boy tender care should be given because bones might be fragile.</span>
You can find how much the blood pumped by multiplying the heart rate with the stroke volume. The heart beats by 72 beats per minute with 70ml blood pumped per beats. Then, the number of blood pumped would be:
number of blood: heart rate * stroke volume= 72 beats/min * 70ml/beats * 60min/hour * 1liters/1000ml= 302.4 L/ hour