Answer:
Mutualism is the type of relationship where both of the species benefit from the other.
Answer:
A product of photosynthesis and cellular respiration
Explanation:
Amphibia is the class of vertebrates which is considered to be the first to develop lungs. This allowed amphibians to live successfully on land as terrestrial organisms. Ichthyostega was the first primitive amphibians with nostrils and lungs. Amphibians adopted themselves to live on land with developed lungs.
Answer:
the increase in size lead to to high ratio hence the large the surface area
