Kevin is studying predator-prey interactions. one day he notices a spider eating a cricket caught in its web. later that day, a bird eats the spider. how many consumers has kevin observed directly in this scenario?

Kevin has observed 2 consumers, the primary consumer, the spider, and the secondary consumer is the bird.

Explanation:

The producer in this scenario is the cricket, and the spider eats first, that's why its called the "primary" consumer.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !