Some drugs modulate the activity of ion channels. for example, novocain somewhat inhibits the opening of sodium channels. what happens to the threshold of a sensory neuron if this drug is used?

Interactions between organisms and their environment impact the organism’s overall population. the jaguar panthera onca is the largest cat in north america. it is found in areas across the southwest, including arizona, new mexico, and texas. it is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, tapirs, and many smaller mammals. which shows the relationship between the jaguar and turtles?