If many signals arrive at an axon's input zone at the same time, the effects are added together in what is called a(n) .
a. trigger zone
b. competing transmission
c. action potential
d. excitation
e. synaptic integration

Which sequence correctly shows the path of carbon dioxide during repiration?

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind