B 1/4 because i seen the question and answer on my test and got it correct
Answer:
lose water , closed
Explanation:
When the two guard cells are turgid (swollen with water), the stoma is open, and, when the two guard cells are flaccid, it is closed.
Hope this helps!
Answer:
A.it travels at a different speed
bisible energy from the sun is different from the non visible energy.
People update outdated cell phones by purchasing smartphone devices.
People purchase solar panels after reading about the effects of burning coal.
People start grocery shopping online as new grocery applications are published.
Options B, C and E.
<u>Explanation:</u>
The statements that are given here talk about the change in the cultural practices of the people with the incoming of the Science and technology in their life and having an advancement of technology.
Like when people change their devices which have gone outdated to replace them with the new ones, or changing ways of shopping things from the older to new and more modern methods is change in the cultural practices because of Science.
This is a physics question, not biology, but...
f=1/T where f is frequency and T is the period.
f= 1/(1/3)=3
frequency =3 Hz
