The illustration shows action potentials traveling in the muscle. The next step following this would be: a) the opening of ligand gated sodium channels b) the opening of voltage sensitive sodium channels c) the opening of voltage sensitive calcium channels d) the binding of ACh to a ligand gated channel

Sydney drew a flow chart to illustrate the nitrogen cycle.which labels best complete the flow chart? x: producers undergo photosynthesis.y: nitrogen compounds are released into the air.x: nitrogen compounds are released into the air.y: producers undergo photosynthesis.x: free nitrogen is in the atmosphere.y: producers absorb nitrogen compounds through their roots.x: producers absorb nitrogen compounds through their roots.y: free nitrogen is in the atmosphere.

How do living things obtain phosphorus

What is the process by which biological parents pass traits such as hair type or eye color to their children