Which one of the following statements is true regarding voluntary and involuntary responses?
a. voluntary responses originate in the sensory receptors.
b. voluntary responses control the activity of glands.
c. involuntary responses may include the spinal cord and not the brain.
d. involuntary responses are part of the autonomic system.

Need will mark ! which features are created by groundwater erosion and deposition? check all that apply. a. stalagmitesb. sinkholesc. rillsd. stalactites e. gullies f. rivers

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Talking listening and reacting non verbally are all part of communicating