It's possible that animals at the bottom of the food chain could be eating them, and scientists say the biggest sources for this type of pollution included packing materials, nylon, paint and a fiber often found in cigarette filters.

有可能食物链底层的动物会吃掉它们，科学家说这种污染的最大来源包括包装材料，尼龙，油漆和纤维经常在香烟过滤器中发现。

And if unanswered here, content decisions go all the way up to the top of the Facebook food chain, to Mark and Sheryl.

果这里没有答案，内容决定会一直上升到 Facebook 食物链的顶端，到达 Mark 和 Sheryl。

UNIDENTIFIED MALE: We put out rat poison to deal with mice and rats that gets into the food chain and hurts hawks and owls and foxes.

我们使用老鼠药来对付家鼠，但（鼠药）同时也会进入食物链并伤害到鹰，猫头鹰和狐狸。

Microscopic marine algae called phytoplankton are eaten by micronekton, like shrimp, which are eaten by smaller fish, which in turn are eaten by tuna and that's just one chain of a much wider ecosystem.

被称为游植物的海洋藻类会被游生物吃掉，比虾，而虾又会被小的鱼类吃掉，这些鱼类又会被金枪鱼所食，而这只是一个更加广泛的生态系统食物链中的一条。

We were the bottom of the food chain.

我们处于食物链的底层。

From bees to dogs, we're moving up the food chain today.

从蜜蜂到狗，我们今天正在向食物链的上端移动。

Changes in the composition of the water will lead to the death of corals and mollusks, and after that, species after species will fall in a domino effect, with eventually the entire food chain likely disappearing.

水的成分变化会导致珊瑚和软动物死亡，之后，一个接一个的物种会像多米诺骨牌效应一样倒下，最终整个食物链可能会消失。

It stays in the fish's body, and it enters the food chain.

它会留在鱼的内，并进入食物链。

If that happens, the entire food chain will be severely damaged.

果这种情况发生，整个食物链将遭到严重破坏。

In such a frugal environment, the pika's farming helps to kick start the food chain.

在此俭朴的环境，鼠兔的耕作有助于推动整个食物链。

Here's food historian, Dr Nadia Berenstein, describing the beginnings of the flavour industry in the 19th century to Ruth Alexander, presenter of BBC World Service programme, The Food Chain.

以下是食品历史学家纳迪亚·贝伦斯坦博士在BBC世界服务栏目的《食物链》节目上，为主持人露丝·亚历山大描述的19世纪调味工业的起源。

Sharks' position at the top of the food chain affects the entire ocean ecosystem.

鲨鱼在食物链顶端的位置影响着整个海洋生态系统。

They are the lion, the balance keeper of the ocean and if they are not there the whole food chain collapses.

它们就同陆地的狮子，维持着海洋的食物链平衡，一旦鲨鱼消失，海洋食物链就会断裂。

You're a little low on the food chain to...

你这食物链底层的没资格顶嘴。

So certain food chains actually became stronger after the fire than they were before.

所以，大火过后，相应的食物链会变得比之前更加稳定。

Henk Tennekes believes that neonics are the main cause of insect deaths around the world, and that via the food chain they're also responsible for the decline in the populations of birds, reptiles and amphibians.

亨克·滕纳克斯认为，新烟碱是全球昆虫死亡的主要原因，通过食物链的传播，它们也是鸟类、爬行动物和两栖动物数量减少的原因。

Once in farm animals, they become part of the food chain.

一旦农场动物使用抗菌素，那么抗菌素也会成为食物链的一部分。

Can't forget the bottom of the food chain, right?

不能忘记食物链的底层，对吧？

If the trend continues, entire food chains and webs may be at risk.

果这种趋势继续下去，整个食物链和网络都可能面临风险。

Living at the top of the food chain, sharks can accumulate dangerous levels of methylmercury.

因为生活在食物链的顶端，所以鲨鱼可以积累达到危险水平的汞。