A stimulus can be internal, or from within the organism itself. A stimulus can also be external, meaning it occurs outside the organism. Both internal and external stimuli can cause a response, or resulting reaction, in an organism.
non-metals gain electron and metals lose electrons,
<span>Iron is a metal, so when it reacts it loses an electron becomes a
cation and form ionic bonds. Hydrogen is a non-metal, it gains an electron when
reacting and forms covalent bonds or ionic bonds.</span>
It will have to be c and d
Answer:
The answer is Pelvic.
Explanation:
The following are groups of vertebrae: cervical, thoracic, lumbar. The pelvis is not part of this group. The pelvis is located at the bottom of the trunk. It is a funnel-shaped cavity (musculoskeletal) that narrows downward, limited by the sacral bone, the coccyx and the coxals, thus forming the pelvic girdle and the muscles of the lower abdominal wall and the peritoneum.
