When a person starts exercising (running) the increase in energy expenditure causes an elevation of oxygen consumption and carbon dioxide production. To compensate for this the respiratory control center senses the LOW oxygen level in blood and the HIGH carbon dioxide level and signals the diaphragm to contract and relax more often (INCREASE THE RATE).
The answer is B
The oceanic crust gets carried underneath another tectonic plate and it sinks hundreds of miles into the Earth's Mantle.
<span>The answer should be: D) water supply
</span>Water is a perishable resource and its supply will limit how much population that an area could hold. <span>With a bigger population, the competition for water will be higher which make water shortage more likely. Others density-dependent limiting factor than competition would be disease, parasitism, and predation.
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There is 20 chromosomes in a adult wild mouse
<span>
What do you think that a very wide space between two contour lines means?
</span><span>
B.MOUNTAIN TOP</span>
