Insulin and enzymes are examples of which macromolecule? Carbohydrates
Lipids
Proteins
Nucleic acids

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

What are some possible short and long term medical concerns for crew members on longer space exploration trips

What is the problem in this article? what solution does the article propose?