Answer:
Acids have a pH value of less than 7, the closer it is to one, the more acidic they are
e.g. HCL (hydrochloric acid) found in the stomach which has a pH of between 1.5 and 3.5
Alkaline solutions have pH values of over 7 (neither acids nor alkalis have a pH of 7 as it's neutral) and the closer it is to 14, the more alkaline they are
e.g. sodium hydroxide which has a pH of 14
Explanation:
Homeostasis is maintained through negative feedbacks. As changes in the environment push a system property from its equilibrium, negative feedbacks counteract the. Change in environment. Change in environment.
Answer:
The sun, Earth and the moon are aligned, but because the moon's orbit is not exactly in the same plane as Earth's orbit around the sun, they rarely form a perfect line. When they do, we have a lunar eclipse as Earth's shadow crosses the moon's face.
Explanation:
Answer: Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water
Explanation:
<span>Some species can hunt in complete darkness using sound alone to guide them to a successful kill.</span>