There are many, and since you didn't specify the choices, some examples include "ff" or "dd" or just two lowercase letters.
Explanation:
Answer:
A. Endocrine
Explanation:
The endocrine system is a collection of glands that produce the hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among all the other things
Answer:
Correct/valid answer is the lenght of daylight.
Explanation:
Abiotic basically means not living.
So, Populations of rabbits are living. It's defintely not that one.
Herbivores are living. So it's not that one.
Bacteria are living. So it's not that one.
<u><em>Daylight is non living. </em></u><u><em>So there's your answer.</em></u>
<em><u>Please mark as brainliest, I need just a few more :D</u></em>