It’s the brain because it tells what your whole body needs to do
Answer:
Explanation:
(in an echinoderm) each of a large number of small flexible hollow appendages protruding through the ambulacra, used either for locomotion or for collecting food and operated by hydraulic pressure within the water-vascular system.
A bonds with T and C bonds with G
A greater more than 3 because in a cube there are 6 numbers 1,2,3,4,5,6
Then it is not equal to have 1 greater than a tree has four numbers and less than three has 2. So more likely, Greater than three.
Answer:
Blood vessels constrict
Explanation:
On seeing danger, impulses are sent to the adrenal medulla. It responds by secreting adrenaline into the bloodstream. This results in the following:
- Increased heartbeat
- Diversion of blood from alimentary canal and skin to skeletal muscles.
- Increased breathing rate and depth
- The liver releases more glucose.
These changes increase energy production especially in the skeletal muscles and prepare animal for sudden fight or flight.
