The Elodea then takes in the carbon dioxide, and produces the oxygen for the snail to take in. ... The amount of Bromthymol Blue in each test tube was important because it shows how much carbon dioxide they are producing. If the color changed, it meant that there was carbon dioxide in the test tube. Please mark brainlest
Some clouds form as air warms up near the Earth's surface and rises. ... That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense.
https://scied.ucar.edu/learning-zone/clouds/how-clouds-form
I hope this helped :)
Answer:
They are the building blocks of life.
Explanation:
They are so called the building blocks of life because they make up everything
