I see pictures above , what do you exactly need help with?
It would be A; Or 0 because since the dominate trait is being able to roll the tongue, it over rules the recessive.
Biological soil crusts<span> are communities of living organisms on the </span>soil<span> surface in arid and semi-arid ecosystems. They are found throughout the world with varying species composition and cover depending on topography, </span>soil<span> characteristics, climate, plant community, microhabitats, and disturbance regimes.</span>
Answer:
It's option A- Solid
Explanation:
Solids have definite shape and volume.
