Answer:
Lungs and Endoskeleton.
Explanation:
Gills helps it live in water, and Scaly skin doesn't really apply
It is true that enzymes in the digestive tract catalyze hydrolysis reactions. The reaction happens when a molecule of water is added to the amino acids that are already in the digestive tract.
1 - introduced to a habitat similar to their own
3 - outcompete native species
4 - generally have no native predators
6 - often have high reproductive rates
8 - can tolerate a range of conditions
Answer:
the sperm fertilizing the egg
Explanation: