What similarities are there between the ways Archaea and Bacteria react to difficult environmental conditions?

They both make their own toxins or switch to photosynthesis as alternate sources of food.

They both create a capsule around the cell or add cellulose to their cell walls for protection.

They both develop flagella to swim away or change their cell membranes for protection.

They both form endospores for protection or develop cilia or flagella to swim away.