Explanation:
it's because it is not suitable for cows
Its D) <span>Microbes allowed plants to uptake nitrogen-containing compounds through the process of nitrogen fixation.</span>
Is it plant fertilization of human fertilization?
the long bone of the upper leg is the femur.
Answer:
Calcium channels.
Explanation:
The arrival of action potential at the presynaptic neuron, cause the opening of Ca+ channels, at the presynpatic neuron membranes. This leads to influx of Ca+ . The latter caused the Acetycholine contained vesicles in the presynaptic neuron to migrate to the tip of the presynaptic neurons, and fused with the neuronal membrane to empty their contents into the synaptic cleft.
