Polar Tropical is not one of the 4
I think that would be answer choice b because it states in the question "existed earlier in time" and evolution is basically things that existed at an earlier time adapting to environmental changes to evolve into something different for their benefit
It is called lock and key model. it theorize that enzymes and its substrate behave like a lock and key which fits into each other and does not fit into any other system(lock or key)
Answer:
The Heart rate would decrease
Explanation:
The Heart rate is expected to decrease, as calcium influx in blocked , since the threshold membrane potential can not be reached so quickly so the action potential will take place in longer time leading to decreased heart rate.
ok, good for Beth, but where is the question??
