Asustainable environment means to be maintained indefinitely and when we use products that have been altered by gmo's, genetically modified organisms, those crops cannot reproduce themselves.
a. true
b. false

False

Explanation:

The genetically modified organisms are the organisms in which the genetic make up of the organism is altered. So that these organisms produce better yield and so as to improve their quality. The aim of genetic engineering in organisms is to develop or introduce a new trait in the organisms, which does not occur in the natural species. Thus the given statement is false as genetically modified organisms are reproducible.

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.