Answer:
The answer is A. Most lichen species are unaffected by the forest fire
Salt molecules are much smaller than sugar molecules, so more of them will dissolve in water.
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5 chromosomes. Meiosis results in 4 haploid cells, meaning they have "n" pairs of chromosomes. The diploid cell that the 10 chromosomes originated in has "2n" pairs. This leaves us with a simple equation to solve the problem, 2n=10, so n must equal 5 chromosomes.
A genetic mutation. It's known as malformation. It can be caused by a trisomy in one of the alleles, or an affected gene.