Answer:
Some lichen symbionts can survive independently on bare rocks in the absence of any external source of organic matter due to the ability of the phototrophic partner to fix CO2 from the air, and <u>nitrogen fixation by the cyanobacterial partner.</u>
Explanation:
Lichen are organisms formed from the symbiotic association of a fungus with an organism capable of photosynthesis, be it an algae, a cyanobacterium, or both.
The fungus depends entirely on the photosynthetic organism in its metabolism of carbohydrates, receiving sugars or saccharine alcohols from it. For its part, the algae depends, for its metabolism, on the water and the mineral substances that the fungus provides it, at the same time that it is also protected by it from too high light intensities.
The plates are<span> moving and </span>are<span> for billions of years... they collide </span>and that they<span> rip apart. The plates carry the continents on their "backs"; if </span>2<span> plates -each with a continent- collide, then a supercontinent </span>is<span> created. The </span>landmass<span> of </span>Asian nation accustomed<span> be </span>an<span> isolated block </span>concerning<span> 30-50 million years ago; it </span>1st<span> crashed into Asia </span>to form<span> the </span>range of mountains<span>. If the movement of the plates brought all the continents </span>along once more<span>, </span>one<span> continent would </span>type<span>. At </span>the instant<span> plate, movements </span>aren't<span> heading </span>in this direction<span>.</span>
When atoms share six electrons, they are joined by a double bond. (.5 points)
a. True
b. False?
Is False
Answer:Ground
Explanation:The roots help soak up moisture fromthe ground and can also store extra food made from photosynthesis
