Can someone answer this as best as possible (in the picture above)

1. 1,000

2.100

3.10

Explanation:

Every time you go up the food pyramid each level gains only 10%, so you would find ten percent of each one

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.

idk

explanation: