The structure that surrounds the cell membrane of some cells, giving the cell a rigid shape is the cell wall.
Answer:
Its number 4 , After billions of years, cyanobacteria turns into iron; the iron beds are remnants from cyanobacteria. its 7th grade science.
Explanation:
Answer:
b. the ocean regulates climate
Explanation:
<span>The probability of an action potential being propagated from neuron to neuron is increased when the postsynaptic neuron's signal is in an excitatory state. During this state, the action potential of a presynaptic neuron increases the probability of transmission of a signal to the postsynaptic neuron.</span>
Answer:
One
Explanation:
Sodium (Na) has one valence electron so it gets one dot.
