我校某生物兴趣小组的同学在探究“光照对黄粉虫生活的影响”时：

①该探究实验要做出的假设是光照对黄粉虫幼虫生活有（或没有）影响．

②该实验中的变量是____，在设计实验时，要给黄粉虫幼虫提供____和____两种环境，以便对照；

③假如光亮处没有黄粉虫或者是黄粉虫数量很少，则得出的结论是____．

④如果“探究湿度对黄粉虫幼虫生活的影响”，则实验中的变量是____，需要给黄粉虫幼虫提供____和____两种环境，其它条件则完全____．

⑤在进行数字统计后，要求取平均值，目的是____；选取黄粉虫时需要选几十条而不选用几条，原因是____．

    Most of us have probably1of Mickey Mouse, Donald Duck, and many other famous Disney characters. Perhaps we have even seen them in movies. But have you ever2to Disneyland? 3fact, there are now four4Disneyland amusement parks around the world. Two are in the United States, one is in Japan, and5 is in France.
    Disneyland is an amusement park, but we can 6call it a theme park. It has all the normal7that you can find at an amusement park, but it also has a theme. The theme, of course, is Disney movies and Disney characters. For example, you can find a roller coaster in most amusement parks, but in Disneyland, the8of the roller coaster is Disney characters. This means that you can find Disney characters all over the roller coaster. You can also 9Disney movies, eat in Disney restaurants, and buy Disney gifts. And you can see Disney characters 10around Disneyland all the time.

一般情况下，虫与鸟的数量和所占比例是相对稳定的，这说明该系统具有一定的____能力．