Answer/Explanation:
b) kidney and bladder
Kidneys are the main organ in the excretory system and the bladder stores the urine in the body. These are two of the organs that make up the excretory system.
Answer:
Air quality is affected by natural processes. Wind can move pollutants from their source to far-away locations. It can still spread and harm living creatures and destroy their environments.
Explanation:
Answer:
color changed.
and the temperature changed.
Explanation:
Answer:
generic variation helps species survive because it gives there offspring there traits to survive
Explanation:
