It's just like going off topic of an essay. If the start is off, the whole thing is off! That's exactly what could happen to ecosystems and food webs. If the primary consumers became all extinct, many effects can happen. One example can be that since there will be no primary consumers to eat the producers, many producers can grow too much, or more than needed. The plants could overgrow with no one to eat them! Another effect that can happen that the secondary consumers can die out without food because there will be no more primary consumers to feed on! A food chain depends on each other, so without the primary consumer, the whole food web or food chain will be clogged up. The last reason a primary consumers can ruin the food chain (or web) is that there might not be enough nutrients because bacteria breaks down primary AND secondary consumers. So, when they're only secondary consumers to decompose, the nutrients that are need may not go to the animals or plants that need them. That's why every part of a food web or food chain counts.
Three Types of Heat Transfer
15 years ago
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