What are some examples of atmosphere?

An example of atmosphere is the ozone and other layers which make up the Earth's sky as we see it. An example of atmosphere is the air and gases contained inside a greenhouse.

Explanation:

123/33

explanation:

because i added numbers

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.