The first step is to understand how the brain gives rise to feeding behavior.

第一步是了解大脑如何产生进食行为。

According to the passage, which of the following is a true statement about the feeding behaviors of sea urchins?

根据文章，下列哪一项关于海胆的觅食行为的说法是正确的？

So this circuit is sufficient to drive feeding behavior in the absence of hunger, even in the absence of food.

所以这个电路足以在没有饥饿的情况下驱动进食行为，即使在没有食物的情况下也是如此。

But now a team of Japanese and Thai researchers has discovered a never-before-seen type of feeding behavior in a rorqual called a Bryde's whale.

但现在一个由日本和泰国的研究人员所组成的团队发现，一种名为布氏鲸的须鲸有一种前所未见的摄食行为。

The whale ingests these toxins in its normal feeding behavior but whether these poisons directly or indirectly lead to stranding and death, seems to depend upon the toxin involved.

鲸鱼在它们的日常摄食行为中摄取了这些毒素，但是这些毒药是否直接或间接导致搁浅和死亡似乎要取决于涉及的毒素本身。

They looked at beak shape and size in almost all of the orders of modern birds and compared the beaks with other factors, such as feeding behavior and body size.

他们研究了几乎所有现代鸟类的喙形状和大小，并将喙与其他因素（例如进食行为和体型）进行了比较。