Answer:
Guard cells perceive and process environmental and endogenous stimuli such as light, humidity, CO2 concentration, temperature, drought, and plant hormones to trigger cellular responses resulting in stomatal opening or closure.
Explanation:
Competition requires instant succession within organism but parasitism can still be a gradual process due to its types exo and endo
THE ANSWER IS COMPETITION
<span>Every day, somewhere in our planet, a unique species of organism becomes extinct as the las member of that species dies. Some examples of this are the Caribbean Monk Seal, Tasmanian Tiger, Quagga, Passenger Pigeon, and the Baiji River Dolphin.
The answer is: <span>Its species.
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I hope it helps, Regards.</span>
Ionizing radiation, for example X-rays, gamma rays and alpha particles
Answer: B. The endoplasmic reticulum
Explanation: GOOGLE
