PLS HELP I WILL GIVE BRAINLIESTPLS HELP I WILL GIVE BRAINLIESTPLS HELP I WILL GIVE BRAINLIEST JUST ANSWER THE 2 QUETSIONS

1. They have to choose which flu strain to make a vaccine for.

2. A person needs a yearly flu shot. This is necessary because there are a lot of different flu strains.

Tamarind can be grown on homesteads, plantations, and wasteland or as a forest tree. methods of propagating tamarind there are two methods of propagating tamarind trees: seed propagation and vegetative propagation. seed propagation: it involves the collection, preparation and direct planting of the seed.answer from google full credit to google.