B. Facilitated diffusion.
Facilities diffusion is a type of passive transport that invokes a protein. molecules move from an area of high concentration to low concentration as seen in the picture with the help of a protein.
Hummingbirds are amazing creatures used upon the passage that will be a specific trait if needed
Explanation:
You didn't attach a picture so i'll just explain how to find the number of stomatas/mm^2.
first you find the surface by multiplying the length by the width
0.1*0.1=0.01mm^2
now you count the numer of stomatas in the picture
in0.01mm^2 you have.........................x stomatas
in 1mm you have ...............................y stomatas
y=100x
The food chain is very important to ecosystems.
Answer:
The stages of fertilization can be divided into four processes:
1) sperm preparation,
2) sperm-egg recognition and binding,
3) sperm-egg fusion and
4) fusion of sperm and egg pronuclei and activation of the zygote.
