B because when the positive feedback happens it increases the temperature and when the negative feedback occurs the temperature lowers itself
some one celled organisms reproduces by binary fission which is a process of cell division. The answer is 4.
The circulatory system<span> comprises the </span>heart<span>, veins, capillaries and arteries. ... Once depleted of oxygen, the blood returns to the lungs and </span>heart<span>. To </span>maintain homeostasis<span>, the </span>circulatory system<span> delivers oxygen and nutrients in the blood so that they can pass into fluids surrounding the cells.</span>
Answer:
A
Explanation:
Activation energy is the amount of energy required to reach the transition state, so A would seem like the best fit, because the heat is being ADDED to reach the state. (in this situation, starting the reaction)
Cold-blooded animals have a higher rate of secondary productivity because their bodies can preserve energy, especially during the hibernation period. W<span>arm-blooded animals, on the contrary, releases more energy in a cold environment. This makes them hunt for more food to gain sufficient biomass and heat.</span>