Answer:
Identify how the physical barriers of the immune system protect the body against pathogens?
skin contains tightly packed cells
•skin is tough, flexible, and waterproof
Explanation:
Answer:
d is the correct answer
Explanation:
an ionic bond forms when positively charged metal ion attract to negatively charged ones
hope this helps !
This is beneficial and is actually an adaptation of humans to climates with larger amounts of sunshine. The darker color of skin helps prevent damage such as sun burn.
Answer:
Explanation:
When sugar increases, there is increase in the productions of ATP
