Answer: Heart Rate
Explanation:
When you are running in a race, one feedback mechanism that happens as you increase exercise and muscle activity is that, your heart rate also increases. Your heart rate increases because it needs to sustain the body's need of more energy to be supplied to the different parts of the body during an activity.
The answer is stratosphere...
The correct answer is answer choice A, 'In predation the predator usually kills its prey, whereas in parasitism the parasite does not usually kill its host'. While parasites can occasionally kill their hosts, it is more beneficial for the parasite to keep its host alive so that it can continue surviving off of the nutrients it gathers. Answer choice B is incorrect because the prey in predator-prey relationships and the host in parasitism do not benefit. Answer choice C is incorrect because the host does not benefit in parasitism, and is often harmed by the parasite. Answer choice D is incorrect because a predator usually kills its prey, while a parasite usually does not kill its host.
Hope this helps!
<span>radioactive zone & convection zone i think
</span>
