Answer:
Tricuspid valve: Allows blood to pass from the right atrium to the right ventricle; prevents blood from flowing back into the right atrium as the heart pumps (systole).
Explanation:
The central nervous system includes the brain and spinal cord.
I would say that the brain stem would automatically send a message to the muscular rib cage & your diagphragm to make them work harder.
Hope this helps :))
Answer:
Scientists have discovered the specific mutation that famously turned moths black during the Industrial Revolution. In an iconic evolutionary case study, a black form of the peppered moth rapidly took over in industrial parts of the UK during the 1800s, as soot blackened the tree trunks and walls of its habitat
Explanation:
Answer:
genes
Explanation:
literally just answered this question i guessed and got it right
