Well it surely isn't nuclear, or electrical. It's not radiant either.. So the only answer is chemical.
The lymph system creates extra white blood cells.
answer: please refer to my word document which i wrote and attached in my answer.i hope it helps you i am so sorry if it wasnt what you wanted. PLEASE DOWNLOAD MY DOCUMENT AND OPEN IT YOU WILL FIND MY WORK .I ALSO ADDED A DIAGRAM OF THE DIGESTIVE SYSTEM TO HELP YOU UNDERSTAND MORE.
HOPE IT HELPS U!
<span class="sg-text sg-text--link sg-text--bold sg-text--link-disabled sg-text--blue-dark">
docx
</span>
Answer:
Diffusion
Explanation:
Diffusion has a membrane which allows even large molecules to pass through it whereas osmosis allows only water molecules as it has a partially permeable membrane.