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Nastasia [14]
3 years ago
14

Describe the water vascular system

Biology
1 answer:
Leno4ka [110]3 years ago
7 0
<span> It is a hydraulic </span>system<span> used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The </span>system<span> is composed of canals connecting numerous tube feet.</span>
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Explanation:

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<em>The total amount of energy transferred during photosynthesis for this ecosystem equals</em><em> 260,000 kcal/m2/yr.</em>

Explanation:

To answer this question, we need to know that  

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So, to calculate GPP we need to sum NPP to Respiration rate. This if,

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NPP = GPP – Respiration

Then,

GPP = NPP + R

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GPP = 260,000 kcal/m2/yr

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The picture above is that of a typical plant cell. Notice the cell wall. The cell wall's main function is to give rigidity and s
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