Answer:
firsthand: coming from experience from a work background or personal experience.
Example: "I have no firsthand experience working with this"
secondhand: been given from a previous owner, by force/gift.
example: "I inhaled secondhand smoke from someone next to me that was smoking."
Source: A source is like a blog when researching information
example: I had to cite my source in MLA format
The second because i said so you ugly toad looking donkey< mofo looking like an arabian turtle
Answer:
They split complex molecules that make up proteins, carbohydrates, and fats into smaller ones.
Explanation:
i did some research and i hope i got this right if it isn't pls let me know