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>
No,they kill all ages for ex.A pack of lions went hunting leaving their cubs behind and a pack of hyenas come and they are hungry they will eat the food that they can
D. Or A. It’s between those two
C.90,000 mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Answer:
<em><u>is</u></em><em><u> </u></em><em><u>made</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>double</u></em><em><u> </u></em><em><u>layer</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u> </u></em><em><u>phospholipids</u></em>