Answer:
Explanation:
1: Is symbiosis
2: is eutrophication
3: Predation
4: Trophic efficiency
5: Greenhouse effect
6: Nutrient cycling
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Answer: fossils can be formed only when a living thing is buried soon after it dies. If it is not buried soon enough, it decays. For this reason, most fossils are found in sedimentary rocks that were once under water.
Explanation:
Answer:
plants, particularly in terrestrial ecosystems, and algae in aquatic ecosystems. If the plants or other producers of an ecosystem were removed, there would be no way for energy to enter the food web, and the ecological community would collapse.
