Identify the correct statement. A.
Early colonizing species in a habitat are called climax species.
B.
The outcome of primary succession is water.
C.
Secondary succession occurs at a slower rate than water.
D.
Primary succession occurs in a habitat that has never been colonized by any species before.
E.
The classification into primary and secondary is based on when the succession started

option a is correct i.e.

explanation:

in context to the membrane of nerve impulse, the outer membrane of neuron is semi permeable that is only sodium ions can pass through the membrane i.e. smaller ions can pass through the membrane while larger ions cannot pass through it.

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: