Biologists point out that in an ecosystem, when energy is input at a trophic level, only about 10% of the energy flows to the next level, in the biological chain of H1→H2→H3→H4→H5→H6 (Hn means For the nth trophic level, n=1, 2, 3, ..., 6), to make H6 obtain 10 units of energy, the energy provided by H1 is about how many units in the following options.
生物学家指出：在生态系统中，每输入一个营养级的能量，大约只有10%的能量流动到下一级，在H1→H2→H3→H4→H5→H6这条生物链中(Hn表示第n个营养级，n=1、2、3、…、6)，要使H6获得10个单位的能量，需要H1提供的能量约为下列选项中的多少个单位．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">10 / (1/10) / (1/10) / (1/10) / (1/10) / (1/10)</gadget>
<output>1_000_000</output>

<result>1_000_000</result>