Identify the parasites in A and B and suggest two biological control measures for the parasite in B. Then, identify the diseases affecting Animal 1 and Animal 2.

3.6.1

The parasite in B is a trematode (or flatworm). This is indicated by its complex life cycle involving a snail as an intermediate host and a sheep as the definitive host, characteristic of a liver fluke.
The classification is: $\boxed{\text{Trematode}}$

3.6.2

• A: The life cycle in A, involving a human and a cow, with larvae in meat, represents a tapeworm (specifically, Taenia saginata or beef tapeworm).
• B: The life cycle in B, involving a sheep and a snail, represents a liver fluke (e.g., Fasciola hepatica). The parasites are:
• A: $\boxed{\text{Tapeworm}}$
• B: $\boxed{\text{Liver fluke}}$

3.6.3

Two biological measures that can be used to control the parasite in B (liver fluke) are:

• Introducing natural predators of snails (e.g., ducks) into affected areas.
• Introducing competitor snail species that do not serve as intermediate hosts for the liver fluke.

3.7.1

• Animal 1: The symptoms of bleeding from the mouth, nose, and anus are characteristic of Anthrax.
• Animal 2: The symptoms of dark red urine, pale eyes, and anaemia are characteristic of Redwater fever (also known as Bovine babesiosis). The diseases are:
• Animal 1: $\boxed{\text{Anthrax}}$
• Animal 2: $\boxed{\text{Redwater fever}}$

3.7.2

Anthrax is a deadly bacterial disease. Animal 1 is suffering from Anthrax.
The animal is: $\boxed{\text{Animal 1}}$

3.7.3

Based on the information provided:

• Animal 1 has Anthrax, which is an infectious bacterial disease.
• Animal 2 has Redwater fever, which is an infectious parasitic disease. Therefore, neither animal is indicated to have a non-infectious disease based on the primary diseases described. The answer is: $\boxed{\text{Neither}}$

3.7.4

The disease in Animal 2 is Redwater fever, which is caused by Babesia parasites. These parasites are transmitted by ticks.
The specific vector is: $\boxed{\text{Tick}}$