Answer:
Layer A is the crust and Layer B is the mantle.
1. Sustainable 2. Environmental
Good roots, sunlight, and a stable base
The vacuole helps the plant cell to maintain the shape of the cell by helping to maintain turbot pressure.
lactobacillus is responsible for producing lactic scid. It is broken down in two groups, hermofermentative species and hetorfermentative species.
