Answer:
b. It allows gas exchange while preventing water loss
Explanation:
Amniotic eggs are the feature of land animals such as reptiles, birds, mammals, etc. The amniotic eggs have four extra-embryonic membranes. This semipermeable protective shell allows the exchange of respiratory gases but does not support the transport of water out of the egg.
The ability to maintain the water inside the egg while permitting gaseous exchange is the specific feature of amniotic eggs and allowed diversification of land animals in the land habitats.
Its based on radiometric age-dating of meteorites material and is consistent with the radiometric ages of the oldest known terrestrial and other lunar samples
I'm pretty sure it's called the ozone layer I'm not sure how to spell it but I'm almost sure that's what it's called
Answer:
tributary
Explanation:
A tributary is a river that runs into another river.
