I think the answer is C. They are trying to emotionally avoid the exam by distracting themselves
Hope this helps :)
Answer:
Diffusion rate is 1.96 × /s
Explanation:
Diffusion is the process in which the molecules of a substance propagates from a region of higher concentration to region of lower concentration through a semi-permeable membrane.
diffusion rate =
Given that; diameter = 15 mm, time = 15 minutes.
The dye spread in a circular form, so that;
area =
r = = = 7.5 mm = 0.75 cm
area = × = 1.7679
time = 15 minutes = 15 × 60 = 900 seconds
So that;
diffusion rate =
= 0.0019643 /s
Diffusion rate is 1.96 × /s
Answer:
get help
Explanation:
get helpjsjsjjjjsjjjjsjjsjshanasnsddjdjsjs
The answer for the first question is option b. , that is sporophyte.
The answer for the second question is option a. , that is a sprouting acorn.
(I am really not sure about these answers, but still I tried my best , so that I can help you.)