The reasons are:
- the blood is very low on nutrition
- the leech is not feeding itself regularly
The leech slows it metabolism a lot, so it can survive on very low nutrition. The blood is very low on nutrition, and it is the leech's food source, so the evolution made it preserve energy.
The leach doesn't have the opportunity to feed itself on regular basis, so it takes maximum advantage of any opportunity and consumes as much blood as possible so that it can survive long term when it will not have food at disposal.
The answer to your question is ''ice forming and then melting back into water''
Hydrolase
This is because it catalyzes a hydrolysis reaction.
Answer: I believe it should be increase. If that doesn’t work, let me know and I’ll correct it.
Explanation:
The answer is A. Amniotic sac
