Answer:
A
Explanation:
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I believe that in this community the tadpoles are: the primary consumers. A n ecological community is the set of all populations of all species found in a given place. Primary consumers are mainly herbivores which feed on plants; which are the primary producers of all the energy in an ecosystem. In this case the tadpoles eat algae (primary producer) thus they are primary consumer.
A base substitution of G:C to A:T after two rounds of replication.
Oxygen, water, some type of resources to build, and food to eat