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.
Answer:
Heart rate goes up, breathing gets labored
Explanation: heart using more blood to work, and then the heart needs more oxygen to work so it forces u to breathe more
Hope this helped!