Answer:
my best guess is number answer 2 and answer 4
because crows love to eat desert woodrats and for the last one i watched it in national geo, its like a cycle grass hopper died by a mouse dies by a rattle snake.
Answer:
True
Explanation:
Some deviations from normal homeostasis activate the positive feedback loops to control the conditions which are otherwise regulated by negative feedback mechanisms.
For example, the blood levels of respiratory gases and H+ ions are regulated by a negative feedback system via chemoreceptors. The increased partial pressure of carbon dioxide gas and lowered pH or lowered partial pressure of oxygen in the blood are sense by central and peripheral chemoreceptors which in turn activate the neurons of the dorsal respiratory group (DRG).
The activated DRG triggers an increased in the rate and depth of the breathing to facilitate the inhalation of more oxygen and exhalation of CO2 to restore the normal levels.
However, hypocapnia inactivates the chemoreceptors and does not allow negative feedback to restore the normal CO2 levels in the blood.
Under such conditions, the positive feedback loop stimulates the DRG neurons more strongly in response to the increased partial pressure of CO2 above the normal levels than when the partial pressure of oxygen falls below the normal level. These dangerously lowered oxygen levels may also cause fainting.
What do you mean by "What is a shooting star, a comet or a meteor burning in our Earth’s Atmosphere?"
edit: ohhhhh you are asking what a shooting star is...
its particles of comets or astoroids/metor enter the atmosphere at very high speeds and burn up
Answer:
A
Explanation:
When petroleum products such as gasoline are burned for energy, they release toxic gases and high amounts of carbon dioxide, a greenhouse gas. Carbon helps regulate the Earth's atmospheric temperature, and adding to the natural balance by burning fossil fuels adversely affects our
<span>The two stages of photosynthesis. Photosynthesistakes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
Hope this helps =)
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